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Handloading for Match Rifles
by
Boots Obermeyer,
April 1994 - updated through
April 1998
The purpose of this paper is to provide a reference
guide for those attending Jim Owens' class on high
power competitive rifle shooting. It is based on
loading for rimless rifle cartridges. The two main
caliber's in use at this time are .308 Win (7.62 x
51) and 223 Rem (5.56 x 45) because they are current
for the issue service rifles. I will use the .308 as
the primary cartridge for this discussion. We can go
into details of other caliber's as time allows.
The main reason shooters handload is for economy.
The cartridge case and the work to assemble and
market a factory cartridge represent at least 1/2
the cost of store bought ammo. So, if you save your
empty cases and provide the labor you can greatly
reduce the cost of shooting. The price for large
volume .308 loaded match ammo to users such as the
army teams is about $0.45 ea. The price to handload
that same round is about $0.21 ea. I should also
mention taxes and proposed new taxes also add
increasing amounts to the cost.
Even if you can purchase ammo cheaply such as some
of the military surplus you will find another
important reason to handload. That is to improve
performance. Military ammo is made to be affordable
and if it is used in burst fire weapons where pin
point accuracy may not even be desirable. You can
load with a bullet that provides accuracy and is
streamlined for good flight characteristics
(BC-Ballistics coefficient). You can select the
propellant and the powder that is the best for your
use. For short range ease of loading may be an over
riding factor, for long range you will select
components based on performance.
You can also tailor the load to your rifle.
While there are generally loads that shoot
reasonably well in most rifles, there are few that
don't in a given rifle. Change of powder or a bullet
will allow you to tune the cartridge to you rifle.
Currently there is also an expanding number of
custom made bullets that can be used to provide
better long range performance than any factory ammo.
Let's get down to the reloading operations.
The first operation will be the resizing of the
fired cartridge case to bring it back to it's
unfired dimensions. For target shooting you will
have to understand this better than the average
hunter or plinker. High power includes rapid fire
which requires smooth feeding, easy bolt closing,
and little effort to lift the bolt and extract. Any
undue effort shifts your attention from shooting to
function and harms your scores. On semi-autos you
won't feel this but if your mind dwells on possible
malfunctions it will also distract you and degrade
your scores.
The major problem sizing the case is correct HEAD
SPACE . This is the end play of cartridge in the
chamber. In theory it is measured from the face of
the fully closed bolt to about mid point on the
shoulder. In .308 Win this is 1.630 inches minimum
to a .400 diameter datum line on the shoulder.
Maximum length is 1.634. I chamber my personal
rifles to 1.631. What you want to do is match the
cartridge case to the chamber. If you have excess
head space you can adjust your resizing to allow for
this. Excess head space is a problem on some service
rifles.
What happens, during firing, the case is pushed
forward. It then expands and clings to the chamber
walls while the pressure rises. The pressure then
causes the head to be pushed reward and the wall of
the case stretches. Where the thick wall of the cup
meets the thin wall of the body it will stretch
causing a crack to form and eventually the case head
separates from the body. You can take a piece of
wire bent with a right angle hook and move it along
the inside of the case wall and feel this stretch
point. You can use this trick to sort out bad cases.
Most failures of match cases in M-14's is caused by
this, not the knurl at the rear of the case found on
some match cases.
The cartridge case usually doesn't contact the .400
diameter ring at first closing. The normal contact
is at the radius of the neck and the shoulder. The
gun can actually be closed easily with a case .002
to .003 longer than the chamber at this point. This
means you will eliminate the end play saving the
case at the stretch point. The trick is how to read
this. The answer is some form of a gage. The two,
easy to use gages, are the ones made by Mo and RCBS.
The one by Mo is large and easy to use. The one by
RCBS is a little slower to use but has a bullet seat
depth gage. Personally I like the one by Mo best. It
would be possible to make a new chamber section for
that gage with the reamer used on your custom
barrel. The gage then would read direct to the
chamber you have. You can also make a gage by simply
chambering a piece of steel with a chamber reamer.
Since the 50's I have made these for personal use by
running the chamber in .050 deep and using a depth
mike to read the case head location.
These gages should be used to set the sizer die for
length. You want to compare a dummy round with a
bullet seated in the case directly in your rifle.
When you get a noticeable feel you want to size the
case a few thousandth shorter. Simply adjust your
sizer by turning it down toward the shell holder.
Directions with both gages tell you to check fired
cases but this simply doesn't work well. The reason
is the cartridge case as fired isn't an exact
duplicate of the chamber as it shrinks back after
firing. Changes in the case wall hardness and
thickness, change the shrink back. The radius in the
chamber is not that of the die. By using the fired
case you throw a third variable into the problem.
The gage can be used with a fired case for a casual
reloader but don't expect it to do the job for a
match shooter.
Cases can be sized into a range of .004 or less for
head space length. The best press for uniform sizing
length I currently use is a Bonanza Co-Ax. Generally
turret presses are the worst. Uniformity of cases
is increased by trying to run a batch about the same
number of firings. I place empties in a single box
and then load from this so a cycle of equal use
results. Careful lubrication of case and uniform
speed of press operation is required. Dies are often
chambered to go head space limits. That means you
can't run the case deep enough into the die to allow
for spring back. In such cases I face the die back
slightly. I prefer this over changing the shell
holder as the .125 depth is a standard. Such facing
can be done with a carbide tool in a lathe or with
proper grinding equipment. I suggest such facing be
kept to the minimum to guard against inadvertent
really excessive head space. (4-96 HS variation can
occur from soft necks and etc. Check primer
section.)
To check cases for length in you rifle strip the
bolt, to be sure the drag of operating parts doesn't
affect the reading. It's also important to prevent
accidentally firing any loaded rounds. I check my
rapid fire match ammo this way. While case sizing is
important, I also find occasional high primers. I
want to stress the stripped bolt and safe handling.
Years ago a customer died doing this. He used an
assembled rifle bolt and fired a round into a keg of
powder resulting in a flash fire. BE CAREFUL.
You can simulate long cases by adding a shim such as
a piece of tape to a case head. Example if your
sized case closes easily you can double check by
adding a piece of thin tape, for example .003 thick.
You should get a feel or some effort to close the
bolt if the case isn't too short. It will take some
thought and effort to learn the details of head
space sizing. I find it's the most difficult item to
relate to a new shooter and even many experienced
ones. This will be the single most important skill
in making good long lasting easy functioning ammo.
Service rifles of course will be more difficult to
work with as disassembly of bolts isn't easy. If you
have a bolt rifle chambered like your service rifle
you can use the bolt gun to run ammo into. I seldom
have a malfunction with my M14, I simply run the
ammo through my bolt gun. The guns were built to the
same specs in the chamber. Some service rifles are
chambered long or wear that way. You may have to
increase the HS length some to correct for this. You
will have to depend on the gage to check the ammo.
If you have such a rifle, by keeping brass adjusted
for that rifle and used only in that rifle, excess
head space won't be a problem. Head space is simply
the relationship of gun to the ammo. That goes for
long chambered bolt guns. If you lose a number of
case heads, check your die settings to that gun.
Even with over 30 years of experience doing this I
still get bit by this problem.
Sizing lube should not be oil as used for
lubrication. The reason is petroleum product can
cause damage to the priming and cause misfires. Just
a trace will do. In past years gasoline was an every
day cleaner. I often hear of cases cleaned that way.
Even after drying the residue can be traced to
primer failure. Use regular commercial sizing
lubricants. These are usually a lanolin product.
Case should be rolled on a felt pad. A ready source
for a pad is to cut it from the upper of an old felt
boot liner. You can make the pad longer than the
commercial pad and the felt works a lot better than
the ink pad types. The only problem I have found is
they can soak up a lot of lube. You can roll a case
neck brush on the pad to pick up a trace of lube and
then run the brush into the case neck. After you've
done this a few time you'll get the feel for the
proper amounts.
Primer pockets can be cleaned in volume by
running a wire primer pocket brush in a drill chuck.
You can also scrape the pocket with a small tool
like a screwdriver. Small sticks of wood can also be
used. Years ago primer boxes were wood and we simply
broke the dividers out and used them as cleaning
sticks. For most loads, cleaning of primer pockets
or prepping the flash hole isn't worth the effort.
Remember that in an 80 round match 60 shots are
fired at short range in standing or rapid fire.
Accuracy should be good, but shaving an 1/4 inch off
the group size is far less important than lots of
practice when it come to what will increase your
score. Long range loads you may find that a little
extra work may help. I find what it often does it
eliminates having an excuse for a bad shot. The only
one to blame is yourself. You will also have more
confidence in your equipment.
I have found that many cartridge cases have a sharp
corner at the outer edge of the primer pocket. I
simply use the deburr tool running in a chuck to
bevel the pocket, just like doing case necks. Don't
get carried away and make this a funnel, just a
small bevel to start the primer. Military cases
which have been crimped along with many match cases
can benefit from this. For crimped pockets a swage
is the fastest and best way to fix these pockets.
There are several types and they work in your
loading press. There are several makes of hand
reamer which work OK to do a small number of cases
but you must be careful or you will enlarge the
pocket and get a lose fit.
Case cleaning is often done by tumbling. You
should be very careful doing this. Appearance of the
case doesn't affect how it shoots. In some guns the
smooth bright case may help on extraction and be a
plus. One very negative aspect is that cleaning
compound can be left in the case. It can reduce the
volume and gives excess pressure. I have also traced
the damage of several barrels, to small amounts of
residue left from tumbling process, being blown down
the barrel and scoring it as the next bullet is
fired. I had one barrel come back with less than
3000 round fired through it. The small diameter in
the barrel chambered for .308 Win was .3065 on the
lands at the muzzle. The barrel was used for
silhouette shooting and was used with only medium
weight bullets and loads. When the barrel was new it
had a .298 bore. In contrast I have shot several
rifles personally past 6000 round with heavier
bullets and loads. The diameter on those lands had
opened to about .300 at the muzzle.
How critical should you be? Back in the old
days, when we had just got around to loading from
the rear end of the rifle, I carefully sorted some
ammo for a Wednesday night practice. I had a box of
20 that everything was just perfect down to an equal
weight of the assembled round. I shot a super score
at 600 yard and being justly proud of it announced
to everyone that I had shot this because of my total
inspection and careful loads and I showed them the
boxes sorted as to culls and best loads. Then was I
shocked and still remember it well to this day. I
had shot a box of culls by mistake. I thought the
ammo I was shooting was the best and the only error
would be me. I really bore down with full confidence
in the ammo, but it wasn't the ammo that made the
fine score. It was my shooting, the same thing that
gave me bad scores. You constantly have to judge
just how much gain there is in each of the loading
details as to the time taken from practice.
Trim Length. When you size the case you
squeeze the case walls inward. The sizer die is
actually much smaller than the case. When you
extract it from the die it springs back. This sizing
action also causes the case to grow in length. If
the case gets too long it can interfere with the
release of the bullet and cause excess pressure. A
sign of excess length often is a dimple found on the
body by the shoulder. This will occur when the case
gets within about .005 of chamber length. For my
match course gun in .308, I trim to the short side
to allow for a number of firing before I have to
trim again. I trim to 2.000 where 2.015 is max.
Again running cases through your rifle so each case
gets fired the equal number of time is a way to keep
trimming under control. I have a loading press set
up on a drill press and use an end mill to trim the
cases. It will trim the case about as fast as I can
run them through the press. To hold the case I use a
trim die which has been shortened somewhat to allow
for the shorter size length and cutter clearance.
The cases are then deburred by running a deburr tool
in a chuck, first outside and then reversed to do
all cases inside. You will probably start with a
hand cranked tool. You will need one of these anyway
to trim those special case like magnums that you
just don't use in enough volume to warrant a power
set up. There are a number of power trimmers on the
market. Find a friend with one and check it out
before you buy one. I have tried some and my
homemade set still is the best and you may already
have some of the parts or it gives you an excuse to
buy a home shop tool useful on other projects.
Primers ignite by shock. Different brands and
types of primers have a different amount of energy.
In large cases you need more energy due to the
cushioning of large powder charge or air space.
Selecting the proper primer for a given powder can
be very important, you will learn this through
experimentation and talking with others loading the
same caliber's. Primers can vary lot to lot. If you
have trouble with a load, one of the first things is
to check the primer by switching to a known lot.
Primers of different brands and types have different
strength levels. Some loads like a mild primer.
Other loads like a hot one. It's up to you to select
the right one. In extremely large cases magnum
primers are commonly used. Federal is a basic type
lead styphnate mixture which is a coarser type
compound, for the same charge size it will be hotter
than the others using a normal style compound which
is finer particle mixture. Federal sorts out the
best primer lots when they box them as match. CCI
makes a line of premium primers called bench rest, I
have had excellent results with them but they are
also more expensive. They appear to be a different
primer than their regular line. Remington makes a
small bench rest primer, their number 7 1/2 and it
is considered to be the standard for such primers
and a stronger cup to reduce puncture.
Most presses have a priming feature on them. You
may have to change parts and handle the primers with
great dexterity. I have found an easy solution to
this is the Lee hand priming tool. RCBS has just
added a similar hand tool to their line. You hold it
in one hand and squeeze the lever. Cases are handled
with the opposite hand. Primers are held in a tray
with a cover and it will easily hold a hundred
primers. It also serves as a primer flipper to get
them right side up. By handling primer in a tray
rather than each by your fingers the chance of
contaminating the primer is reduced. The tool is
cheap and very fast. The negative is that if you
have tight pockets you might not seat all the way
down. It pays to visual check the case and if
necessary a stubborn primer can be seated on your
regular press. Another problem is the lever is cast
pot metal lever will with a lot of use break, but
parts are cheap. You do have to buy the special
shell holder for this tool, it doesn't interchange
but again it's cheap and changes from one rim size
or primer size to another in a minute. Wash your
hand before handling primers to be sure you don't
contaminate them and get misfires.
Lee builds a version of this that screws into the
die station of your press with the primer punch
replacing the shell holder. There are several other
brands of primer tools and auto primer setups made
by various manufacturers. The progressive tools come
with such a device. Before you buy one, talk to some
one who owns one and see how well it works. I have
loaded a lot of rounds on a progressive Hornady and
for many years I have owned the Large Hollywood
turret presses. At times they work just great but I
still find the majority of my loading is done using
a single station press and a loading block. Quality
rather than quantity being the deciding factor.
4-96 During the 95 season I had problems with
accuracy. My ammo just wasn't working like I
expected. One day I was shooting a few rounds
through the chronograph just outside of the shop. I
got a hangfire. That led to two discoveries. First
was a new lot of primers were not producing the same
velocity as the older lot. They were weaker. These
were CCI BR2 primers which I had found to be
extremely good. However, like every brand some
variation will occur and this was the year of primer
shortages and you were lucky to have any. I had some
older Federal 210's and switched to them for
critical matches. I had the same problem with 210's
only a few years earlier so it can happen with any
primer make.
Next I took a look at my cartridge cases for
headspace. I had some, which was the most likely
cause of the hangfire. I had been expanding 243
cases too 6.5 for 600 yard loads and in the process
some shoulders were pushing back with the extra
shove from the expander ball. Also I had started
neck annealing my nickel 7mm x 08 cases I used for
the 6.5 due to neck splitting. The loss of hardness
changed the spring back on sizing reducing the
length from head to shoulder a few thousands.
To correct these problems I adjusted my full length
sizer for the rapid fire loads and I switched to
neck sizing the 243 cases and shot them the first
time with 200 yards loads at practice.
During the 95 season we tracked down some ignition
to short firing pins. The usual length is .055 with
a max. length of .062. If you get too long you may
cause the primer cup to pierce as the metal lows
back around the point from the pressure. The point
should be smooth and round like a ball, steps act as
stress risers and may cause the primer cup to
fracture on these lines.
Powder measures. The better ones are easily
adjustable and have calibrated scales or dials. If
you use a progressive press or turret press the
measures usually can be screwed into a die station.
Powder measures will usually throw a more uniform
charge on a press in which the charging is mixed
with cycles of the press, the vibration acts to tamp
the powder in the measure drum. This could be a
deciding factor in whether to load a given load via
the loading tray or progressively. If one is making
200 yard ammo or practice ammo (not checked on a
scale), speed can be a plus over a small loss in
quality. But if the powder charge is tamped on the
progressive you may level out charges and get more
uniformity than separate charging. The way to find
out is to experiment and check the powder weight.
Powders, like the ball types, usually flow good
through most measures but the IMR stick type powder
decreases accuracy of thrown charges because the
grains are longer. Usually a baffle in the powder
hopper helps as it keeps a constant weight on the
charge going into the drum.
I have found it useful to keep measures set up for
different charges that I use constantly. Since these
charges are usually checked on a scale I have found
the Lee measure to work well and it is quite
affordable but won't be my first choice if I could
buy one measure only. These measures and others come
with a bench bracket. I mount these to a wood plate
and I can then move the measure anywhere on the
bench. I just clamp it down with a c-clamp. This
also makes dumping the powder measure when finished
loading, easy. I take one of these along with a Lee
Hand Press on trips to Camp Perry in case of loading
emergencies. THEY DO HAPPEN. One year a new lot of
cases had some soft heads mixed in and I pulled my
long range loads apart and reassembled them in old
practice cases I had brought along. Every year,
someone in our group has an unexpected problem and
these tools get used. In fact they often get used at
local matches. One common problem is bullets seated
too long causing problems in rapid fire. ZIP out
with the nut cracker and the day is saved.
Powders are selected for performance and ease
of loading. If you can get equal performance on a
short range load from a ball powder or a coarse
stick powder you will probably take the ball. It
will run through the measure well saving time that
will allow you to make a few more practice rounds.
It's practice that makes points, not small savings
in group size. Ball powder such as Accurate 2230 in
the . 223 and 2520 in the .308 are low in price and
have a reputation for good solid performance. My
experience has been mostly with 2520 and I have used
it extensively for short range shooting and even won
a major national title at 600 yards with it. However
I find that it is more sensitive to temperature
which magnifies as the bullet weight goes up. This
varies gun to gun as each barrel does have it's own
likes. Eric has shot it more than I have and used it
with 150's in his 308. He shot a 200-20X with on the
200/600 reduced target in a league match a few years
back.
Temperature affects powder and is one
readable variation and you should keep details as to
sight reading and daily conditions in your score
book. I recall one load that shot very good but the
scores weren't all that good. Looking back over 4 to
5 weeks of plots in my score book I found the zero
moved about 4 minute with a 25 to 30 degree
temperature change. I changed to another powder and
cut the zero range to about 1 MOA. Since points are
obtained from a group fired in the center of the
target good repeatable zeros become more important
then group size. Hunters usually lose sight of this
fact and spend hours testing groups from a bench,
the result of which, may be meaningless in the
field. Generally your single base stick powder are
the least affected by temperature changes.
The recoil cycle is another affect of powder.
The gun moves back in recoil when the bullet starts
to move. This makes the zero very sensitive to sling
tension, shoulder position and alike. This is why in
rapid fire you may fire 2 or 3 little wads of shots
in different places with the same call. Selecting a
powder that performs well at reduced pressure for
light recoil is important. Most powders like a
certain pressure range to perform well. A commonly
known case is IMR 4064, it seems to like hot load or
backed down about 3 to 4 grains, but not in between.
4895 is more flexible generally. I have had good
luck with Reloader 15 in .308. I found for the same
velocity the acceleration of recoil is less than
4895. I replaced 41.5 of 4895 with 168's using 42 of
Reloader 15. My 200 yard zero was 1 MOA higher
standing. I thought the load had been slowed down.
Going back to the shop I checked it, the velocity
was 12 ft/sec faster. I was seeing recoil. Further
use of this charge proved to reduce the difference
between my standing zero and my rapid zero with a
sling. I then went to 40 of Reloader 15 with 190's
for 300 yards. The velocity was only 2415 but the
zeros were very repeatable and the groups were
little wads. That was the last year I shot a .308 at
Camp Perry for the match courses. I lost only 4
points at 300 that trip.
In 1993 I switched to 6.5 x 08 in June. I used a
charge of 38 of 4320 with 120 MK's. The load shot
quite well and 4320 is a fine grain stick an meters
extremely well. No need to scale each round, just
charge a block. Returning from Camp Perry I decided
to switch to N150 for the 120's. It didn't throw as
well as 4320 and would have to be checked on a scale
for match use. I had superior performance with N160
in the past 2 months so it's faster mate looked like
a good bet. I loaded 37.5 of 150, the recoil was
very mild and velocity was fair. Checking it over
the chronograph showed a very low SD (standard
deviation) and ES (extreme spread). I went to the
regional with only a short test and shot a 400 agg.
in rapid fire with this load. Over the following
weeks I found that a 1/4 minute change on the zero
took as much thought as a 4 minute change
previously, the repeatability was so good. I learned
this powder had for my 6.5 several virtues. It could
be reduce loaded for low recoil with no loss in
performance. It was also not sensitive to
temperature changes as others I had used. The last
match fired was in October and was very cold and
windy so I experienced a range of at least 50
degrees.
In late 94 I found reduced velocity with N140
required more elevation on my 6.5 x 08 than required
for N150 both pushing the 120 Sierra MK at the same
velocity. This indicates that N140 may cause less
problems with normal variations in rapid fire
position. In the 95 shooting season I have to expand
on this and look at N135, also.
I installed a 6.5 x 08 barrel on a Ruger M77 for
hunting. Keeping in mind that zero was more critical
than speed, one never knows from what position one
will fire from crawling through the swamps and woods
of Wisconsin, I loaded for reduced recoil. I ended
up with a reduced load of N150 and the Nosler 120 at
2795 in a 27 inch barrel. My match rifle was
shooting 2785 in a 28 inch barrel. I had loads that
shot safely 200 ft faster but the recoil was
noticeably greater. Zeroing it at a 100 yards I
found that all shots from the bench, standing (if I
broke it well), and sitting would go into the white
center of the sighter target. This is what we want
in a competitive rifle and should look for in our
hunting rifles.
In the 94 season the work with the Ruger paid off.
Kicked up a buck. He took off on the dead run and my
first shot killed a large tree that jumped right
between us. I picked an opening about 10 yards ahead
and broke the shot on his shoulder as he jumped
through. The shot was to far back to have the proper
lead because I was limited by reaction time and have
to stop the swing to find an opening. The shot hit
dead on for elevation but to the rear hitting the
front of the rear quarter. By the time I walked the
85 yards he was dead as a stone. The 120 Nosler BT
gave very impressive performance. The light recoil
held the zero and the nickel cases slipped in and
out of the chamber with no effort. I even recall
worrying about where the nickel empty went after the
first shot and then realized how stupid that was as
the deer was still running. Your mental process from
constant shooting practice speeds up beyond what
most people expect. I erred in not having the proper
lead but proper selection of the load and practice
allowed that quick 2nd shot that placed the buck in
our freezer.
For long range prone shooting, especially
magnums you will find generally the coarse stick
powders work the best. These are generally of a
slower burning rate as you will be using heavier
bullets. In the last few years Hercules has added to
their Reloader series numbers 15, 19, and 22. These
are made in Sweden and are slightly double based.
They will generally give you slightly more velocity
for the same pressure. 15 is widely used in the .308
for short range and long range with heavier bullets.
19 and 22 are used in long range loads with heavy
bullets. 22 is only about a grain slower than 19 and
most shooters who use both seem to end up with 22.
In small caliber's like 6.5 x 08 you will pick
slower powder than the large bore 30's. That's
because the volume of the bore increase at a slower
rate as the bullet moves. 22 is a good choice in the
smaller caliber's.
In 1993 I was provided with powder from VihtatVuori
OY of Finland through their USA distributor. I had
read some technical data from this company in the
past that circulated through the ammunition industry
and had been impressed with it. I stared with the
N160 for long range in the 6.5 x 08 and then N150
for short range. I used N150 for long range near the
end of the season and also used in the 7 x 57 with
outstanding results. It is one of the most versatile
powders I have ever used. Late in the season I also
used N165 in the 7mm Rem mag for 1000 yards
replacing my previous load of Reloader 22. In all
instances I got outstanding accuracy and a very low
SD on each load, sometimes below 5. Wayne shot N140
in his 308 this last weekend. The groups were very
good and the velocity, SD and ES were excellent. He
said it matched 4064 closely. I find the ES lower
than many of my other loads, the wide velocity
chance on a single round may not change your SD a
lot, but it may be that unexplained shot. Personally
I'll take a little higher SD if I keep my ES small.
Experience in 95 confirmed VihtaVuori is a superior
powder.
An extremely good line of rifle powder is Scott. I
and Eric found that 4351 was the powder of choice
with heavy bullet in our .308's. In the 7 x 57 my
scores improved with 4065, it was a big improvement.
However Scott was bought by Accurate to obtain the
shotgun powder sales enjoyed by Scott. At this time
it looks like they will not replace the supply of
the rifle numbers. That is sad because I currently
rate this line right with VihtaVouri powders as the
best available at this time.
4-96 Varget is a new powder by Hodgdon. It's
imported from Australia. It appears to be what they
know as 8208 down there. I haven't shot it but I
have heard many reports of excellent performance.
However, like all powders it does appear to have
it's problems. A leading Palma team shooter said he
had experienced a very rough throat after 2400
rounds in his rifle even though the seating length
hadn't changed much. He had another barrel with the
same use but shot with 4895, the throat lengthen,
but didn't roughen like the one used with Varget.
No powder is free of problems. Your barrel is going
to wear. the new powders appear to reach higher
pressures with less visible signs of such on the
case or primer. Also in the Palma we are shooting
medium weight bullets faster then in the past when
these were reduced loads for 200 and 300 yards. The
pressure time curve is higher and longer and this
means more barrel wear. A number of shooters claim
Vihta Vouri is harder on barrels. I have not found
this to be the case, I suspect it's their change in
use and that they are shooting hotter loads then
they realize.
Bullets are the major cost in reloading. You
can select a bullet for use at a given range that
will combine needed accuracy, cost, and price. Some
shooter feel that a bullet must have a label on the
box that says match. That's simply not the case. One
of the best bullets I have ever shot in 7mm is the
160 SBT Sierra. It's a soft point boat tail hunting
bullet. It is also has a BC like a .308 190 but you
will shoot it faster. People worry about soft points
being deformed, well small amounts usually don't
bother you and I simply place the loaded round point
up in my ammo box. I used this bullet across the
course in 1981 in a 7mm x 08. I won the State
Championship that year with a 788-34X. That score
stood as high on the state trophy for about 9 years
and Wisconsin is one of the toughest shooting states
in the country. I picked these bullets again in
early 93 for use in my 7 x 57 and again I shot
superior 300 yard scores and also used them back to
600 in the sniper matches.
That doesn't mean that all hunting bullets will
work. I bought some bulk 120's for 6.5 made by one
of the majors, they are marginally OK for standing
practice at 100 yard but just don't work well enough
to buy more. Buy a single box and try them first.
Generally most bullets of the medium weight hunting
design by Speer, Hornady , Nosler and Sierra work
well for short range. However the price saving is
usually so little it doesn't pay to make a special
buy unless they fit a need where a match bullet
doesn't work or wasn't available. The Nosler
ballistic tip bullets have a very fine reputation
for accuracy and are being selected by an increasing
number of shooters for match use because of their
performance, but they are not cheap.
In match bullets of the commercial makers Sierra is,
without question, the leader. They offer the largest
number of target bullets. One of Sierra's virtue is
they have probably the best handle on making jackets
of anybody in the world. They draw a heavy jacket
which is extremely concentric. This jacket
uniformity is one most important features of a
bullet. If the wall is thicker on one side than the
other the mass will not spin on true center. Bob at
GTB who has spend 40 years making custom bullets
says world wide Sierra has the best jackets.
However, Hornady knows this too and has a product
improvement campaign on going and has been making
some vastly improved match bullets starting with
their 168's. Not every maker makes exactly the same
design bullet so each make offers you something
another may not. I am hoping to see Hornady look at
more streamlined designs such like the VLD's and
other caliber where match bullets are short such as
6.5mm.
Speer is probably the least noticed in match bullets
but the few offering they have are outstanding. In
tests I have seen with their 168's shot against
Sierra in many groups the average group size was
only a hair behind Sierra. In .308 they offer a
short boat tail 190 that works well in marginal
twist barrels. Some users feel they shoot right with
the best custom made 190's. This could be a good
choice for those wanting a long range bullet in a
gas gun. The design will cause the bullet to shed a
little more velocity than the others at 1000 yards
but you need accuracy first. I have used a lot of
145 Speer match bullets in my 7 x57 with extremely
good results, especially when coupled with 4065 for
a powder.
Handmade custom bullets are being used by an
increasing number of shooters. These bullets offer
the extra quality hand selection and feel provide.
One bullet maker tells me he throws bullets into a
cull box when they don't feel right, even if they
look good. The design of these bullets often differ
from those of the factories. In the last few years
Very Low Drag design known as VLD as taken over.
These bullet simply slip through the air easier
hence for the same launch velocity reach the target
quicker. This means a design with a long sharp point
ogive and a long boat tail. The dies to make these
are very expensive and are not affordable for most
reloaders with dies and presses priced in the
thousands of dollars. The best dies are carbide.
These bullets, in the heavy weights, generally
require some what faster twist than commonly used.
Stability of a bullet is based on it's length which
results in a tendency to overturn from drag on the
nose. The spin of the bullet counteracts this.
I have found through observation that the VLD's
require slightly less twist that an equivalent
length bullet of conventional design. I assume this
is due to reduced drag on the nose. Currently I feel
that twist can be reduced about 10% of the
revolutions per second required when compared to
common bullets on which I have based my table from
past experience. Testing in late 94 appears to
confirm this. I think the bullet wants to spin
around the center line of projection which is
disturbed by muzzle blast. A discussion on this was
held early in 95 with a man at Aberdeen Proving
Ground tends to confirm my ideas, that we need to be
careful in selection of powder and pressure, that we
may be able to use much slower twist that originally
thought possible.
Another point with VLD's is that you seat them
farther forward so that you can use a heavy charge
in small to medium cases and hence a higher
velocity. This again reduces the rate of required
twist. In .30 caliber using Wayne Anderson's 210 VLD
we have found the velocity will increase about 100
ft/sec over the Sierra 220 and the required twist
for top accuracy which with the 220 is 8 1/2 inches,
but found to be inches for the 210 VLD or perhaps
even a little slower. Since Wayne makes these in
various weight you can cut the bullet weight to
match your barrel twist. This is the way to get
better long range performance from gas guns. Use
Wayne's 180's and you will get to 1000 yard with out
having the bullet drop back through the sonic
barrier and weird shots that accompany this. We have
a big advantage with Wayne as he is one of us and
lives in Burlington. He shoots what he makes, check
his scores.
Other VLD bullets are made by Delta (Rick Mulhern)
in .30 caliber, in a wide range of weights. JLk
(Jimmy Knox) is well know for his .22 VLD's in
70,75, and 80 grains. Jimmy added 7mm in 168 and
180's. Jimmy is adding a 6.5 in 140 grains and I
have a few samples. I have shot a number of his 7mm
180's in my 7 x 57 and won 600 yard matches, they
are extremely good. GTB is Bob Cauterucio, he's the
old master of the trade. It took me a few years to
find out that when the hot west cost shooter, when
asked what bullet they had just shot a good score
with at long range said 190's, they weren't telling
you they shot GTB's. They look just like Sierra's at
first glance but sure shrink the group. Bob has now
gone to exclusively making bullets in 6.5 and 7mm.
Most of these are the VLD design and are all with
Sierra jackets. He also runs many bullet jackets
down from the next larger caliber to get a thicker
jacket. This reduces the problem with hammering on
the boat tail. Eric's 798 x 52X in the 4 gun 600 at
LaCrosse in 93 was with Bob's 6.5 141 VLD made on
7mm Sierra Jacket. Bob even goes so far that he
makes his own lead wire.
Walt Berger has semi -production operation going now
and is the largest volume maker of custom bullets.
His 6mm 105 is what really got the 6mm off the
ground as a serious match caliber. He is planning to
add 6.5 but I've heard both he and Jimmy Knox are
waiting on J-4 Jackets. Walt is the distributor for
J-4's. In some of the bullet I've seen his bullets
are slightly less aggressive than some of the other
VLD's but have an extremely good reputation for
accuracy.
David Hammett in Louisiana makes a lot of VLD's in
6mm and has quite a following. In Wisconsin we also
have Timber Beast which is now making 22's with
rebated boat tail design. Rebating is suppose to
give up to a 5% gain on BC.
A Caution on VLD's. Many are made with J-4 Jackets,
which are thinner that Sierra's. If you push them
real hard you may upset the boat tail and get an
erratic shot or even a miss. It is a common problem
with 243's. You may also experience slightly more
fouling. Don't think that doesn't mean they won't
shoot. Wayne has made bullets on both jackets with
extremely good results. I just want to warn you of
the difference. In 95 a new maker named Wall, who
makes excellent 7mm VLD's, is being reported from
the Oklahoma area.
I have also found that if you shoot VLD's extremely
hard you may get an erratic shot. In 7mm at least 3
of us found that we got unexplained shots at 10 or 2
o'clock. I recall shooting a 197-13X with a 9 and 8
not called at 2 o'clock. It took about a year to
really wise up and simply cut the load back about
100 ft/sec and I lost the weird shots. In 6.5 x 08
Eric and I both experience wide shots not called at
600 on a hot day when first using this caliber. I
had gone 48 straight 10's with this barrel before I
shot a 9 and then the world almost ended. Checking
the loads heated in the sun I found the velocity on
some rounds had risen from the average 2835 to well
over 2900. I cut the load back to below 2800 and it
worked . But the barrel won't hold zero. Apparently
I had blown a chip off the surface as it fouled. It
would shoot 3 rounds on the spotter and then shift 1
1/2 MOA. The barrel still the shot short range load
into the X ring. In 94 I set the barrel back and
lapped it lightly. It shot very well confirming that
I had damaged it with too hot of loads.
Eric's barrel had slightly narrower lands and less
pressure, it suffered no damage as his scores
proved. I had to switch to my back up rifle the day
before leaving for Camp Perry. My daughter, Carolyn,
made a trip to the range to pull targets so I could
get Zeros. Boy, was I worried but the first time
over the match course now bumped back to the Silver
team because of the rifle change and uncertain zeros
I shot a 490-22X in the Rumbolt and we placed just
behind the gold team. Winnequah had placed 3rd and
4th in this team match. Perhaps the strongest
showing ever for regular local club teams. Hey when
you've done it, brag a little, makes up for all the
crying towels one uses.
The point is by keeping records of my loads and
performance I was able to identify mistakes and make
corrections. In the case of the gun change it was
the knowledge of how the load shot and what to
expect from sighter and conditions. True it won't
work that well every time but the odds of an
educated guess sure beat blind luck. KEEP RECORDS.
Seating, I got carried away, talked of
bullets but didn't seat them. I prefer Bonanza Bench
rest seaters. They have a sliding bottle that gives
good alignment of bullet to case. Some shooters spin
their assembled round. However I don't find that
necessary with a good die. Also such spinning means
most where you use short bullets with short
bearings. Bench resters like to do this but they use
mainly .22 and 6mm with lightweight bullets. When we
use such bullets it's for short range rapid or
standing where such minor changes in accuracy are
masked by the shooters wobble area. I suggest if you
do such you limit it to long range loads or
selection of proper tools and their adjustment.
Seating length should be off the lands some what. I
generally figure about .025. I use dummy rounds to
determine when I get contact and simply back down
the require amount. A vernier calipers is a must and
I would suggest an electronic digital type, while
extra cost they simply work better. You can use lay
out die or alike to see touch of the bullet. There
are also some gages sold to do this, you'll have to
work with each to see if it does the job. I am
doubtful of these due to difference in bullet shapes
and throat wear. Some people want to seat firmly in
the lands. As a general rule this is not wise. The
reason is that the bullet can't touch equally each
time due to bullet variations within the same lot
and wear or fouling in the bore. When the bullet
touches you will get a spike in pressure. In tests
with pressure guns I find this to be about 5000 CUP.
That is a significant figure if you touch once and
then don't. A slight run up generally provides the
best uniformity.
In 95, Enco and other offer low priced micrometer
sets. Enco has been offering on sales a 3 piece 0 to
3 inch digital micrometer set for less than $90. The
micrometer sets may be a better option as they
provide better accuracy reading to 1/10,000 and can
be used to check bullets and various parts. If you
go the micrometer route check out low priced
conventional calipers. In the March sale the digital
0 to 3 set sell for $89.99. A conventional set 0 to
3 at $29.95 or 0 to 4 at $39.95. The larger set
would cover all seating lengths. A conventional
vernier scale calipers o to 6 sell for $12.99 and
they offer a dial type for as low as $29.99. Don't
wait to buy these tools. With the shrinking value of
the dollar they will be going up as they are all
imports. Watch for the sales. Enco has a new one
about every month. Their Chicago line is
800-860-3400, local calls 312-745-3500. Or write
Enco Manufacturing Co.; 5000 W. Bloomingdale Ave.,
Chicago, IL 60639.
There are cases where long seating does help. I have
found such in .308 my 220's with 4064 shot better
long but not touching. Using 4895 with 168's I seat
short for rapid fire but the group will improve for
slow fire if I long seat. Found this out shooting
the league with the 200/600 target. Rapid fire does
present a problem as long seating in most cases just
won't work, you have to seat for function as a shot
not fired is 10 points lost, a flier may only be the
lose of an X or a point. I found in my switch to
Reloader 15 with 168's the load was not sensitive to
seating length and the change from rapid fire
seating to long seating wasn't a significant change.
Again records must be kept and all items examined on
how they influence one another.
In these loads priming is important. The long seat
changes the way a given powder burns early in
ignition. Bob Jensen seats bullets with a lose
sliding fit in cases sized in a special die. He also
ran tests with primers used to propel air rifle
pellets. He found Federal 210M primer to be the most
uniform. RWS which he also used were weaker and not
as constant. When fired in the rifle the weaker RWS
primer shot the best with bullet engagement but the
210's did not negating any gain from contact. In
fact quite a few shooter who research this find
usually the small jump is better. You must touch the
lands, is another one of those sound good tales that
get printed in the pulp gun magazines or spread by
word of mouth. Problem is, a lot of people simply
accept what sounds good as true, yet it may really
have no bearing in fact.
CAUTIONS; when loading don't smoke and wear
safety glasses. Never function test ammo through a
rifle unless you have the firing pin removed and
then treat the rifle as loaded and will fire. Be
careful of primers they are the one item that can
exploded from a blow or fire. Many a shooter has
been surprised with bangs from his trash burner when
lost primers ends up there.
Powder can break down from age, look for rust like
dust or moisture appearing on the grains. Powder
should be stored where it is cool and dry. Ideally a
freezer because the low temperature reduces
deterioration. Year ago shooters in this area bought
large quantities of surplus powder that was
beginning to break down. We stored it in freezer and
used it quickly when loaded. At least one person
didn't do this and had a fire. Others had old ammo
simply not fire. If you have any doubt simply flush
it down a toilet if you live in an apartment or
scatter it on your lawn. It will then fertilize your
lawn.
Don't use cartridge cases that have been exposed to
fire. The head of a case is hard, it gets this way
from work hardening during manufacture. If you fire
a case with an annealed head it will fail and may
cause injury. If you anneal necks set the case in
about a 1/2 inch of water and just turn the neck
dull red. The water keeps the base from annealing.
Case neck splitting can often be reduced by
periodically annealing the neck
Examples of old wives tales. Barrels must be
straight to shoot. Truth, unless bent, resulting in
walk or a sharp corner the bullet doesn't sense the
minor bow of a barrel until you exceed 4 km/sec. I
have built barrels that go to 8 Km/sec. Groove
diameter must be tight and extremely uniform In the
early 60's Bob Jablonowski had a late 50's M70 match
that he won the state championship with and shot a
250 on a possible 250 course of fire, the old 5V
target. After pulling the barrel and air gauging it,
I found the barrel was .0015 larger at the muzzle
than the breech. Everyone would say it can't shoot
but it did. The reason is that in single point
rifling, the rifling head rides on the lands. The
bore reamer was defective and as it wore in, it cut
a funnel type hole which caused the inverse on the
grooves. The lands drive the bullet not the grooves
and they kept tightening on the bullets as it passed
through the bore. Would I suggest making such, of
course not but this has remained with me for many
years and why I went to deeper rifling and odd
number of lands. I have made a point to check not
simply barrels that don't work, but also ones that
do. Common mistakes often credited with horrible
results can be found in good barrels. That means,
what is the real problem may not be the obvious
error. Hand loading is much alike. We look at easy
to measure discrepancies and therefore miss the real
problem. Lot to lot change of primers, powder, or
bullet jackets usually cause far more problems than
runout in spinning, variation in charge weigh, or
seating length.
Another tool like this with perhaps more
influence is a dial gage rig to test the uniformity
of the case wall near the base. The theory is that
it changes the thrust on the bolt head hence causing
flex of a differing degree on the action. Greighton
Auddette did some research on this and I have a gage
he made. Again I suggest that for the Hi-power
shooter the best thing is to use these gages is sort
out bad lots of case or select the best for long
range. If you can shoot regularly over 195 with good
x-counts it might be worth while trying sorted cases
with your gun to see if it helps. I have tried this
and neck turning and really haven't found it that
worth while, except I have no excuse, to let myself
off the hook, for a bad shot.
Chronographs are getting to be very low
priced. I think it's worth while to get one, perhaps
share the cost with your shooting buddy. It gives
you a handle on velocity and it's variation that can
cut time out of test shooting. For any advanced
level shooter it is now a necessity to be
competitive.
Ammo Boxes. I prefer the use of 50 round
plastic ammo boxes to store my ammo in. They are
inexpensive and available in several sizes. I attach
my loading labels right to the top of the box.
During shooting I use the rows to double check my
round count. In slow fire prone I go to the center
and shoot my 2 sighters. Then I go back to the first
row and proceed in columns of 5. In matches except
for sighters or problems shots I give my attention
to the shooting not the score book. The ammo box
tells me where I am. On completion I mark my last
shots and zeros in and then enter the score from the
score card. I do listen to the scorer call out shots
to be sure we agree.
In Rapid fire loading from rows of 5 also gives you
a check on loading blind magazines such as the M-14
and the AR's. In some caliber's I shoot some hunting
bullets like in my 7 x 57. The plastic box allows
them to set point up so the point don't get
hammered. When you pick up your fired brass also
gives you a quick double check on what you've got. I
shoot a lot of nickel brass now and that adds to the
cost, getting it back helps.
Group testing isn't something I do a lot of.
When I do such it may be at the range in a practice
where I simply don't fiddle with sight and plots the
shots at 600. Occasionally I will go to the local
range and shoot 100 yards. On the heavy recoil
rifles I shoot the groups prone and note bad calls.
The rifles we shoot often have too much recoil to
give the best performance from the bench. Remember
the gun recoils before the bullet leaves the muzzle.
If you shoot groups that way try some good known
loads and compare against that, not the measurement.
It all gets back to records and comparisons.
My log Book is laid out like this:
Sample from 1993 using 6.5 x 08 Rds on barrel 725
Aug. 29, 93 Lacrosse 80 shot 200 Standing
194-3 Elva 1 1/2 Wind 0 Rds fired 22
REM Case CCIBR2 Primer 200 sit RF 99-5 1 3/4 0
37 1/2 - N150 99-4 1 1/2 0 22
120 MK 300 Prone RF 100-6 5 0
100-5 5 0 22
REM BR case REM 7 1/2 Primer 600 198-14 15 1/2
1/2R 22
44.7 - N160
GTB 141 Total score 790-37 Rds on barrel 813
Sept. 6, 93 PLSC-practice
REM Case CCIBR2 primer 100 stand 197-3 -1 1/2L
37- N150 100 sit RF 96-0 48
120 REM soft point bulk Found load is not
shooting. Shot some prone, it's not a very good
bullet.
Rds on barrel 861
Sometimes I will sketch in where groups were by
score as I enter all data by hand in a 3 ring
binder. I use sheets with plastic strips so they
won't tear out easily. Sometimes I copy pages from
the score book or include other notes such as wind
and temperature. I keep all my old score books so if
I miss something I can go back to them. Like
everyone else I started with fewer records. However
as time went buy I have found them to be of
increasing value. I find I often trace back result
into the early 80's and wish I kept such records
back into the 60's.
Useful information; the new VihtaVouri
powders how then line up against more familiar
powders.
N133 is faster than N135 and should be useful in
small cases.
N 135 per the manufactures list falls between
4895 and 4064. This is the burning rate but not
necessarily the actual charge rate. However it
should be close as a starting point. Always start
low and work up. I have been hearing of excellent
results when used with 168's in the 308.
N140 is listed as slower than 4320 but faster
than Reloader 15. Wayne says like 4064. I have shot
more of this and it appears to be with about a grain
of my N150 loads in my 6.5 x 08. In my last tests it
appears to have an edge over N150 when using reduced
velocities. I have had numerous good reports from
customer using it in .308's.
N150 is listed as slightly faster than 4350.
I have found that this powder performs exceptional
well over a wide range of loads. It's ability to
fire at reduced charge without loss of performance
is exceptional. They list it in medium size cases
often 5 or 6 grain less than 160. Result with my 6.5
x 08 looks closer to 3 1/2 grains. I suspect this is
a problem relate to the pressure time curve in
reading transducers, they chose the safe side on
interpreting data.
N155 is a new offering. It is a short cut
powder falling between 150 and 160. It runs through
a measure better than the other two but in my
experience is a little more selective in
application.
N160 matches in well with 4831 and Reloader
19 per their listing. My loading confirms that. Also
like 150 it seems to take a wide range of pressure
with no loss in performance.
N165 They list it right at the fast edge of
Reloader 22. In my 7mm REM Mag used for 1000 yard,
the load and velocity, was almost exactly alike.
N170 is an extremely slow powder, listed to
be slower than H1000. Very little of it has been
available so I have no data. It should be a good
powder for those extremely big wildcat. ( I have
heard it may be renamed N167 as it a hair faster
that thought previously)
N500 series is started to be marketed. It is
a high energy powder producing more velocity for the
same pressure. i have heard of some outstanding
results with it by service shooters in the
mouse-o-matic. It may be very useful with the VLD
designs. Price is higher so this will probably be
best used as a long range option.
Varget is a new powder by Hodgdon and appear
to offer more velocity by being able to use a slower
powder in smaller cases. Mid Tompkins reports good
results. I haven't had chance to try it yet.
I would also like to point out something that many
shooters miss, even those with a lot of experience.
Powder burns by time, not the volume created as the
bullets moves along the bore. That is what causes
pressure excursions when the bullet hesitates in
it's acceleration. This also means that when you
have a large heavy bullet you do not need a large
case. Select one that is only large enough to do the
job. If you move excess powder along with the bullet
it adds to the weight of the projectile and defeats
what you are trying to do. It is the small bullet
that easily accelerates that can actually make use
of the huge case. These can be useful for varmint
hunting where ranges are not extreme but trajectory
on a small target is a problem. Distances up to
about 500 yards. Antelope hunters have made use of
the 7mm STW for this with 140 grain bullets because
distance is hard to judge, especially for a non
resident on a once a year hunt. But the STW makes a
poor long range magnum for 600 to 1000 yard use.
Large powder charges and heavy bullets are very hard
on barrels. Long range shooting for example at 1000
yard means the bullet may be in flight for over 1
1/2 seconds. The bullet drops at a rate of 32 ft per
sec per sec. It's an accelerating rate so uniform
velocity is critical. Barrel wear contributes to
loss of uniformity. Also the large charge cushions
the ignition sequence and the slow powders simply
are harder to ignite. You will open up your velocity
string and lose more than you gain plus consume a
lot of $$$$.
Barrel length is one way to get more velocity, you
need length with any large case and slow powders. If
you use a reasonably long barrel with a medium size
case not only will you gain velocity it will also be
more uniform. A couple years ago I made a 36 inch
barrel in .308 for General Dynamics to use for
testing. I shot some of my .308 ammo through it and
found the shot to shot velocity was really uniform.
There was virtually no increase of velocity with
medium bullets and a small amount with 220's. The
case was to the small side but the increased
uniformity was interesting. I don't advocate a 36
inch barrel for a match rifle but it could be a
worthwhile point to consider between the shorter 24
inch barrels and the longer 28's or 30's. Barrel
time will go up, a problem in standing, but in a
long range gun it's all prone.
Purchasing components. Usually you can do
better by buying in quantity. The price is often
better, but even if not you may save on shipping
cost or trips to you supplier. However, one of the
most important consideration is you have a single
lot. Powder often varies in charge data lot to lot.
If you buy 8 pounds in 1 pound cans as needed you
might end up with several lots, each requiring a
change in charge weight. Primers are often subject
to some change lot to lot. Considering the shortage
of primer and some other supplies keeping a fair
stock on hand may mean shooting or not shooting at
times. People talk of rare coins for value, primers
in 94 came close to being the same. In early 95
shortage in bullets and cartridge cases are visible
but primer supply is better.
Cartridge cases can very from lot to lot, especially
from year to year as changes in dies and material
occur. Today most cases can be bought in bulk and at
a good savings in cost. You can also buy in bulk
nickel cases which gives you better function in bolt
rifles.
Dies. In 308 it has been a problem to get
dies that size the case small enough at the
shoulder. If the shoulder isn't reduced enough the
memory of case after firing will cause extra effort
on extraction. Currently the .308 RCBS dies works
very well. The small base is a misleading label as
it isn't extra small but just about where it should
be and the shoulder is tight. This may be more of a
problem on G.I. cases with thick wall than some of
the newer commercial cases.
Get a package of decapping pins and it probably
would be wise to have an extra decapping rod, they
can be bent or broken. If the die get scratched if
can be polished out by spinning it in a lathe chuck.
Use fine paper and a slotted rod to polish the
inside of the die, a drop of oil helps.
If you tear the rim off the case which happens
usually from lack of lube, pull the case via the
following. Unscrew the decapping rod so it backs
away from the base of the case. Drill out the primer
pocket hole and tap it 1/4 x 28. Now find a ring to
go around the case head but seats against the base
of the die. Place a washer under the screw head that
reaches the ring and use the screw to pull the case
out. If you have access to machines you can make
yourself a one piece cap to act as the puller. It
will look much like a long screw type bottle cap
with a hole in the center. These have been sold at
times as commercial items.
4-96 For dies like 6.5 x 08 a simple way to make
dies is to drill out the die with a carbide drill.
Take a regular 243 die and ream the neck to size
with a carbide reamer. The die is then filled with a
surface hardening compound, heated bright red and
quenched in water. The die is then place in a lathe
chuck and polished on the inside with fine paper. Of
course you have to know the proper neck diameter.
You'll need the proper size expander ball. This
offers easily availability to many special wildcat
using regular inexpensive factory dies. The cost of
special reamers to make sizing dies will exceed $100
each making this procedure very attractive. In 6.5 x
08 we got to doing this procedure even though custom
factory dies were available because we found a need
for small based sizer for better rapid fire
extraction. Carbide reamers and drills are available
at low prices from MSC.
Powder scales. They don't have to be fancy.
Magnetic dampened scale work well. You want to watch
the swing of scale as the center point is the
correct weight. Reading while static, by dropping in
a single grain or two might not cause a response of
the beam. There are electronic scales but
considering the cost I put these low on the want
list for a new shooter who has more urgent wants. I
charge a block of cases and then pour the powder
into the pan to check those I weigh. It's much
faster than moving the scale pan back and forth to
the measure. You also get more uniform loads. In
doing such I made a long plate to hold my measure. I
clamp the plate in a bench vise and have room to
move the loading block around. To dump the powder
when though loading I simply open the vise and tip
it into a funnel in the power can. I usually correct
weight charges by simply taking pinches of power in
my clean fingers. I use an empty bullet box for the
powder. I have found it much faster than a trickler.
Books. Each bullet manufacture puts out a
book on loads for their bullets. Some of the powder
companies do also. You will want to obtain several
of them and use them as reference guides. They have
useful information on exterior ballistics. The loads
from one book to another may not agree as they all
have used differing components and gun to develop
the loads. When they disagree use the lighter load
and work up. Trim length and other useful details
are also included.
Computer programs are also available. The
most useful are those covering exterior ballistics.
You want a program that gives you trajectories and
wind drift to 1000 yards. A few programs are based
on hunting and shorter distances. They often allow
for target speed and height. The best programs take
into account temperature, altitude, firing angle,
humidity and other factors. By comparing many
factors you can select the best bullet and caliber
for your use. Two of the programs I have figure the
speed and force of recoil. This can be significant
in selection. Example, in a study of recoil for 1000
yard rifles it was found the 338 using the new
Sierra 300 grain bullet increased the recoil by 50%
over that of a 300 Magnum. The wind drift using
Wayne's 210 low drag was only about 1 1/2 inches
greater in a 10 mile an hour wind. The choice was
then to consider problems of zero shift from the
heavy recoil and fatigue from such recoil versus a
small lose of wind bucking ability. For me it was an
easy decision and I didn't have to fire a shot. It
was the 300 Magnum.
I have also used the wind diagrams in one program to
build wind charts for the score book for the bullets
and velocities used. This program prints out 1/4 of
a circle in either inches or minutes allowing you to
correct for the angle of the wind. It is easy then
to make a complete clock diagram to have chart just
like in your score book, but for you load.
I just purchased a new program called on Target for
Windows, version 1.0 by JBM (1994). It will figure
the BC of an unknown bullet from form and twist
rates required based on velocities. I'm just
starting to use it so will take sometime before I
can say how good it works. 4-96 This program hasn't
worked out well. Tom Blank has studied it and found
errors. I also bought the Pejsa Ballistics program.
It's in an old basic format. It seems to work OK but
not up to some of the other programs.
So far the best program is Ballistic 4.10 by W. R.
Frenchu (1992). This program will work in several
drag functions and will produce trajectory and wind
graphs. My Sierra program is about a 1987 version
and is not as nice as Frenchu's. There are quite a
few programs available so I guess the best thing is
try and find someone who has one and see if it does
what you want.
There are some programs that even give you load
data. If such loads refer to current reloading
manual data it shouldn't be a problem. However one I
heard about calculates loads from case volume and
bullet. Such a program may be useful to a person
working with wildcats with no data. I would add that
such a person should be an experience reloader in
development of such loads. I have worked with
pressure guns for 25 years and built my first
wildcat in the 50's. There are factors other than
simple expansion ration to a given powder that
change pressures. As mentioned earlier the contact
of the bullet to the land or length of freebore will
change pressure. In making 243 pressure barrels I
experiment with changing the throat length. I change
the length .025 and the pressure changed
significantly and the velocity changed by 200 ft/sec
yet the bullet did not contact lands in either case.
Also the change in the cross section area of the
bore or the finish on the bore will also cause
differing pressures. I traced a problem once that
cause bolt set back in a major brand of rifle in 7mm
Rem mag. The barrel was 4 groove but the groove
width used was that for a 6 groove barrel. There are
many variable that interact, so I fear a new
reloader might get into trouble due to a limited
back ground.
Chronographs are now quite low in price. I
recall being in Gander Mt's outlet and they were
selling out reconditioned small units for around
$60. Larger model go around $200 to $300. The better
ones now have printers and proof channels.
Wayne and Mark just bought a nice unit for under
$200. It has sky screens with 2 ft. separations and
a large area. Wayne was testing groups prone while
shooting through the screens. The display would hold
each value and you could scroll back through the
memory and see each shot and then record it. This
feature allowed you do to what a printer will do but
for about $100 less. A third proof screen to give a
back up reading , shows a bad reading. However in
most cases these reading will be far enough out that
you know they are bad, so for normal use you can
save by not buying this feature. The sky screen
works best in overcast or clouds. Bright sunlight
will cause glint on bullets and false readings.
Light diffusers help but may not work when the sun
is not directly over the screens.
Practice, often done alone. I have said, save
some of your loading time for practice. I find that
100 yards on reduced target works very well. If you
have a local range available it most likely is 100
yards. I shoot a lot at 100 yards. If I have doubts
about a load I take primed cases, a powder measure
and scale along with a hand tool to seat and test at
the range while also getting in some practice.
Targets are available for all stages reduced to 100
yards. One of the big advantages is you can see the
bullets hole in your scope. One trick, cut your
target out behind the center of the bull allowing
light from behind. Large sections of card broad box
make a handy target backing. You only need a few
large 100 yard full face targets and then just keep
replacing centers. Group testing on the 100/600
reduced gives you results scaled to the real thing
and the practice at the same time, that is if you
shoot groups prone.
Reduced loads referred to as plinker loads can also
be used for shooting on limited ranges. In the early
60's we shot offhand matches in the shop after
closing hours with a couple of friends. The bullet
was a Speer plinker in .30 caliber pushed by a small
charge of pistol powder. Another case I recall a 6 x
225 using 60 grain bullets and a small charge. It
shot much like a 22 RF and gave me indoor practice
for an early spring international match. The energy
and velocity should be about that of a center fire
pistol. The noise level low. It may be such a load
can give you that extra practice. Some of the
loading books give loading data for this.
4-96 BLOOP TUBES & VLD BULLETS. I installed a
bloop tube on my 6.5 x 08 after the 95 Camp Perry
matches. Like most shooters this was done to extent
sight radius. I saw a drastic improvement in
performance and lost the wild shots associated with
VLD bullets. Some of this shooting was done with a
scope so I wasn't simply experiencing sighting
improvement. I recorded 15 twenty shot matches at
600 yards since the tube went on. During this
shooting I lost only 12 points and most of these
were traceable to my error in sight adjustment for
wind. I recall one 9 I shot after shooting three
200's in a row, I shot the 9 and marked it in the
score book before the target came back up. 3 were
lost at Racine, late on a Wednesday evening when it
was very dark. Another shot was lost at La Crosse
dropping out the bottom, I simply went to long
without cleaning. So, all 12 points lost were
accounted for to shooter error.
I think what is happening is that the bullet is
subject to variations in muzzle blast as it exits
the muzzle. This effect appears to happen most with
bullets of great length. I have noticed this in 6.5
and 7mm with reports coming from 1000 yd shooters
using .30 caliber's. In my experience, slowing the
velocity and using a faster burning powder has
helped. The problem is seen less in 22's and 6mm's
with shorter actual lengths. In some cases lost
shots in the these were traceable to distorted
boattails because many of these have thin jackets.
My current thoughts are that the tube contains the
gas from the muzzle blast producing a high density
atmosphere uniformly around the bullet at exit. I
think the Sierra design (7 to 8 R), being more
blunt, has more point drag and is less likely to
move off the projection axis then the sharp pointed
VLD. This difference explains why the VLD is more
likely to produce a wild shot. The high density from
the tube increase the drag on the VLD correcting the
tendency to wander off the intended course.
It has been suggested what I have seen is simply the
damping of barrel whip. My tube is stainless steel
where as other usually make these of aluminum. I
point out, my barrel is a heavy with 12 flutes and
was cryogenic treated. All loads seem to shoot
better and I think a vibration change would still be
sensitive to changes of load. Over the years, there
have been numerous reports of improvement of
accuracy with muzzle brakes which are screwed on,
not those cut into the bore. In some cases this may
be simply the reduction of recoils keeps the shooter
from simply flinching as he shoots. In one recent
conversation I got a report of improved grouping on
a heavy bench type hunting rifle where shooter error
is not likely.
I had a conversation with researcher at the Unv. of
Arkansas. He feels like I do, that the wild shots
are a function of length in actual length, not
proportional in caliber length as commonly done for
stability related to twist rate. He also pointed out
that a lot of fine parts of powder, fractured by the
ignition is blown out the muzzle. I have noted the
problem is seen more with large cases with large
charges of slow burning powder. This fit his
scenario. He went on to speculate that what we may
be seeing is ignition of some powder particles at
the exit changing the uniformity of the muzzle blast
surrounding the bullet. The bloop tube contains all
the gas damping out this effect. This seems to be
born out by my results as I also experienced better
grouping with 120 MK's at 300 yards and 140 MK's at
600 yards. If irregular muzzle blast is a problem
all bullets should be effected but we simply don't
see the really wild shots with these shorter
bullets.
I had a conversation with Bruce B. who is a leading
builder of 1000 yd bench guns. I related what I had
learned. Bruce had been experimenting with bloop
tubes. He had used tubes with 1/2" and 5/8" inside
diameter and hadn't seen any improvement. Al W. had
experiment with small I. D. tubes with 308's, he
found that 5/8 was too small and when he opened to
3/4", the gun shot well. My tube is .812 inside and
extends 6 inches past the muzzle and has no vents.
Another shooter had 4 guns with tubes in .223. The
tubes were 5/8" on the I. D. Two shot well and the
other two didn't which appears to confirm Al's
experience. In the early 70's I built a number of
laboratory test barrels. These were fired with an
extension tube on short pistol barrels fitted in a
universal receiver, the tube was required to support
the system in a steady rest on the arsenal mount.
Performance was screwed up until I vented the tubes.
Note, this was with very slow moving bullets. It
appears the tubes must be selected in a proper
diameter and possibly length to prevent accuracy
lost and if just right, may result in improvement of
accuracy.
Bruce had attended a party hosted by Norma at the
Shot Show. He had a conversation with an engineer
from Norma. They had found that their real sharp VLD
bullets shot well at shorter ranges like Bruce had
at 600 yards. Bruce said he found accuracy
deteriorated when the bullet approached 1000 yards.
They confirmed this. In the past I had been sent
tracking data from Norma. They can track a bullet in
flight for several 1000 yards by a radar system. The
engineer said as the bullet slowed down at long
ranges it appeared to encounter some problem which I
would think of as a turbulence. I have a sample of
their early design and it has a ogive of 15 radius
or more. He said the felt the problem was related to
sharp transition point of point radius to the
cylindrical portion. They changed the point to what
was described as an 11 to 12 radius and the problems
with accuracy appeared to have been corrected. This
appears to match the design of the Lapua 138 in 6.5.
It's as long as the GTB 141 but visually the radius
on the point is less. Reports on the 138 from Joe. H
who has shot them extensively at 1000 yards in a 6.5
x 08 is that they shoot extremely well. I have shot
them twice at 600 yards and both scores were
200-11X. Corky T. commented Norma view appeared to
match result we've had with bullets using a tangent
ogive which gives a sharp transition point. Now this
doesn't mean excellent score can't be fired with
sharper VLD's as they certainly are, but give us
some area to think on for future developments. It
also might have some bearing related to wild shots
and bloop tubes.
WHEN ALL ELSE FAILS, PRACTICE SHOOTING TO IMPROVE
SCORES.
Updates 4-97 VLD Design not proving out
There as been more information in the last few
months about what appears to be errors in the
concept of super sharp bullets. My experience with
the 138 Lapua with a mild radius proved even more
successful than reported last year. I fired them
three times more at 600 and now have 100 records
rounds without a point lost. Sierra has introduced a
142 grain 6.5mm bullet. An early sample I have shows
it to be a close match to the Lapua when projected
side by side on one of my comparators. Early reports
from those who have used the new bullet confirm its
performance is outstanding.
Randy Gregory reports a conversation with Larry
Miller that is extremely interesting. Now please
note what I am reporting is third hand. Larry teamed
up with Scott Medesha and Mid Tompkins to do some
long range tests on bullets. They made some
chronograph screens used at 1000 yards. The screens
were made by using thin insulation board with a
sheet of aluminum foil on each side. The bullet
passing through the screen made contact through foil
and triggered the chronograph. I assume two screen
were used at a proper spacing per normal practice.
Most screens of this type work by a breaking of the
circuit rather than closing it so some other change
must have been made. Repeated shots could be fired
through the screens.
The bullets discussed were the new 140 Hornady
A-Max, the sharp point approx. 17 radius GTB in 141
or 144 weight, and the new 142 Sierra. The Hornady
lost more velocity than the others and apparently it
couldn't be fired as fast but proved to have fine
accuracy at 600 yards. The Sierra 142 and the GTB
show the same velocity lost at 1000 yards. The sharp
point just didn't work out as projected from short
range tests. The Sierra also proved to be more
accurate.
I believe the problem is a greater turbulence with
the long radius. Bill Sheane spend some time with
Bubba Beal at Powell River labs. They shot the new
tungsten core bullets all the way to 1700 yards.
Greg from PRL told me the point of impact for a 12
radius and a 15 radius projectile launched at the
same speed was the same. Bill reported that in
watching the bullet through the spotting scope, the
12 radius looked like a dart but there was a
noticeable wake with the 15.
Wayne Anderson has moved to improve his bullet and
had a 10 radius nose forming die made. The limited
test to date indicate a sharp increase in
performance with only a slight increase in
trajectory. Bruce Bear shot an outstanding group
with these new bullet at 800+ yards. Randy Gregory
reports fine performance and in the first Palma
match at Lodi in 97 Wayne cleaned everyone shooting
his new bullet in a 180 grain version. Likewise I
have learned that Bob has modified his GTB bullets
by getting a nose die like Wayne's. One report from
a bench rester in the east indicates extremely good
results with the new GTB 6.5mm 144.
Now of course there have been good scores with the
sharp points. I have been using 180 VLD's in my
Palma rifle. These were made by Doc Palmasano before
he sold the die to Wayne. In my 308 they shot
extremely well all the way to 1000 yards. In 97 I re
barreled my magnum to 30-338. I worked up a load
with these 180's at 3174 ft/sec using VV N560
powder. It shot very well at 600. I had a 199-11X at
LaCrosse. The I went to Lodi and shot it twice at
1000 losing an average of 10 points per match.
Something happened. I suspect the extra high
velocity induced some problem in flight that became
only visible past 600 yards.
Moly coating (spring of 97) is now coming on
strong. I plan to start doing it myself and have
been getting the supplies. There are a number of
industrial source for the moly at reasonable prices.
One in Atlanta sells 3 Lb. or more for $15 a Lb.
That's more than you need so pool up with your
buddies. Ball bearings are normally used but steel
shot about BB size should work. Both tumblers and
vibrators are used. If you use a vibrator be sure
you close it or you will have a black cloud.
Many of the shooters do not wax the bullets. This
means the moly will wipe off on your hands. I have
also been told that the amount of wax is critical. I
just got a barrel back that didn't seem to shoot as
well as expected. The shooter reported a dark shadow
in the barrel. After looking and cleaning I couldn't
find it but noted the edges of the grooves appeared
dark. Then I checked the muzzle with the microscope
at 10X. The muzzle was OK but I saw what appeared to
be paint in the corners of the grooves. Never saw
anything quite like this before. Finally I scratch
the surface with a brass pin and found the paint
appearing substance was like a grease. I believe it
is wax and possibly the cause of the accuracy
problem. (Later-shooter said he didn’t use moly
coated bullets?)
Those who shoot the moly coated bullets report less
fouling. They can go through a match without needing
to clean the bore. This is an advantage because most
barrels take several rounds the settle down after
cleaning which may cause a few lost points. The
amount of powder required with these bullets to
obtain the same velocity as previous, is usually
about a grain more. What appears to happen is the
bullet simply slips easier over the lands hence it
goes farther down the tube in early stages of
combustion. This is like having a bigger case. The
volume per unit of time is larger, hence more powder
is required.
Reports of less drop are common. This is probably a
result of an easier flow of the bullet as it
distorts in length to compensate for the area take
up by the lands in the barrel. The bullet, I feel,
simply retains a better form hence better flight
characteristics. We just encountered an interesting
case that illustrates how bullets go thorough the
barrel. During the winter Randy Gregory fitted
several custom made 9 groove barrels of another
make. He recovered these along with others from the
snow bank they were fired into. The bullets fired in
the 9 groove barrel hadn't touched the grooves. the
diameter was .304 to .305 and the lead core had
squirted out of the open base of the 172 military
bullets. This is visible proof of how bullets
distort when passing through a barrel to compensate
for the lands. Metal doesn't compress.
8-19-9
Seldom do you actually get to see results as clearly
as in this test. I always tell people that
mainsprings lose their cast and may cause problems
with ignition. Often this is verticals at long
range. Remember I said in my past use of this new
barrel it didn't seem to settle down at 600 as well
I thought it should.. I thought it was the barrel
just breaking in and me adjusting to a new rifle.
The misfires and the wide spread in velocity on
Monday's tests suggested a problem with the action.
I pulled the spring out, it was lighter and shorter
than the new Wolfe. It may also have simply lost
compression. This action was made in the 60's and I
think it's the original spring. This was an action
from a spare rifle and hasn't been used much in last
few years.
I dressed up and polished the pin point to make it
smooth and round. I faced off a little metal down in
the sleeve that stops the pin's fall. Moved
protrusion from .055 to .060. Installed the new
mainspring.
I had to clean the barrel so I shot some 120's
through it to check another powder for short range
practice and foul the barrel. To show the change I'm
listing all the velocities tested.
6.5 x 08 w/142’s
Before new spring; 1. 2731, 2. 2732, 3. 2769, 4.
2758, 5. 2749, 6. 2730
After new spring 1. 2724, 2. 2724, 3. 2730, 4. 2723,
5. 2726 also after first 120’s I shot a remaining
round from test before that misfired, it was 2734.
Note; excursions were to the high side, not the low
as normally assumed from faulty ignition. Both loads
were 39-N150, Lapua case, BR2 primer and 142 Moly
coated bullets loaded to 2.855+ OAL
Question is, why didn't the 140's fired before the
mainspring change show the extreme variation the 142
did? Load was 39 N150, Lapua case BR2 primer , 140
Moly coated bullet load at about 2.820 OAL. 1. 2732,
2. 2722, 3. 2728, 4. 2740, 5.2730
MOLY COATING (4-98). I used moly coating
through the last half of the 1997 season. This
process reduced vertical stringing in my well-used
6.5 x 08. The rifle had 4000 rounds on it when I
switched to moly bullets. This was exceptional life
and I credit cryo treating. This was done in 1995
and was my first barrel to be cryo treated. At 600
yards this barrel was starting to show more vertical
shots. This comes from roughness in the throat. Cryo
causes an alignment of the structure and appears to
reduce the spauling in the throat but it’s a hedge,
not a cure all. The moly coated bullets slide easier
through the throat so roughness causes less velocity
variation.
On July 20 of 1998 I shot a 198-15X with moly coated
142 Sierra’s to win the 600-yard stage at the Pig
Roast in Eau Claire. I shot the same load again on
the 23rd for practice at Racine and has 198-12X. The
barrel was now has 4372 rounds through it.
I use no wax. I run them in a MIDWAY vibrator, with
about 2 1/2 lbs. of 5/32" steel balls in it. It
takes about a teaspoon of moly to charge the
tumbler. I then run 2 boxes of bullets in it. It
takes about 2 hours for the first batch. Then the
tumbler is charged and time will be one hour or
less. I add a small amount for each batch. I use a
medium size, flat blade screwdriver as a spoon to
pick up a small amount of moly.
You can make a strainer out of two plastic buckets
like those used for ice cream. Take one and drill
holes through the bottom for the steel balls to drop
through. Simply shake the mixture so the balls drop
through the first bucket into the second bucket. Now
take a large plastic pan and cover the bottom with
paper towel. Dump the bullets on the towel in the
pan. Now take more towels and roll the bullets by
hand. The excess moly will wipe off and you're ready
to load
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