American Rifleman - November 2021 - 69

6 MM REMINGTON HANDLOADS
BULLET BRAND/WEIGHT (GRAINS)
PROPELLANT BRAND/CHARGE (GRAINS)
HORNADY V-MAX/75
IMR 4064/41.5
BARNES TIPPED TRIPLE SHOCK/80
RELODER 22/51.0
SIERRA PROHUNTER/100
IMR 4350/43.0
CARTRIDGE LENGTH
(INCHES)
2.825
2.800
2.825
VELOCITY
(F.P.S.)
3,056
3,189
2,833
ACCURACY
(INCHES)
1.04
0.99
1.31
NOTES: VELOCITIES ARE THE AVERAGE OF SIX SHOTS RECORDED BY A CHRONY BETA MASTER
CHRONOGRAPH AT 10 FEET THROUGH THE 18½ " BARREL OF A REMINGTON MODEL 600 MOHAWK
WITH A 1:9 " RIFLING TWIST. ACCURACY IS THE AVERAGE OF TWO, THREE-SHOT GROUPS AT
100 YARDS WITH A LEUPOLD 2-7X 33 MM VARI-X II SET ON 7X. HANDLOADS WERE ASSEMBLED
WITH REMINGTON CASES AND WINCHESTER LARGE RIFLE PRIMERS. TEMPERATURE 34° F.
Faster-burning propellants, like IMR
4350, won't achieve the highest velocities
possible in 6 mm Rem. handloads. A slowburning
powder like Reloder 22 is needed.
Barnes 80-grain Tipped Triple Shock
bullets for the 6 mm. Gail fi red one
of the bullets across a prairie fl at
this past fall and dropped an antelope
buck that stood head-on. My
rangefi nder displayed 360 yards to
the buck. " I aimed up just a bit, " Gail
said. The Triple Shock had lodged in
front of the pelvis, expanded perfectly
and still weighed 79.6 grains. To keep
a practiced hand during the spring
and summer, Gail shoots ground squirrels
and marmots with Hornady, Sierra
or Speer 75-grain hollow points.
Propellants
The 18½ " barrel on the Model 600
fi res bullets rather slowly compared
to the velocities listed in reloading
manuals. Firing near-maximum
loads, the rifl e has never shot 70- or
75-grain bullets over 3,200 f.p.s.,
which is a good 200 to 300 f.p.s.
slower than the same loads shot from
24 " barrels listed in various reloading
manuals. For example, the 600's short
barrel fi red Hornady 75-grain V-Max
bullets at 3,056 f.p.s. with 41.5 grains
of IMR 4064. The Hornady Handbook
Of Cartridge Reloading Tenth Edition
states a velocity of 3,400 f.p.s. with
one additional grain of 4064 fi red
through a 24 " barrel.
But that's okay, because this is
still plenty of bullet velocity to aim
right-on and hit marmots as far away
as they can be seen through the
rifl e's low-power scope. Even sporting
rifl es wearing a 22 " or 24 " barrel
usually register slower velocities than
are stated in reloading books due to
erosion in their throats and bore and
dimensional tolerances of their chambers
that are greater than stipulated
for test barrels used to record data for
today's reloading manuals.
A lot of load development for the
6 mm has been unnecessary. The
rifl e's accuracy has been more than
acceptable when just picking a suitable
propellant and seating a bullet
over it deep enough for the cartridge
to fi t in the rifl e's short magazine.
One thing is evident, though, and
it is that propellants with a relatively
slow burn rate are required to produce
the highest velocity from the 6 mm,
even from the 600's short barrel. A
charge of IMR 4350 a couple of grains
below maximum fi red Barnes 85-grain
Triple Shocks at a slow 2,800 f.p.s.
The Barnes bullets reached 3,100 f.p.s.
only after fi ring them with a near
maximum amount of the much-slowerburning
Superformance and Reloder
22. The same has held true for various
brands of 100-grain bullets. These
The three handloads listed in the above
results table all grouped well through the
author's wife's Remington Model 600.
bullets barely break 2,600 f.p.s. fi red
with propellants with a burn rate
similar to IMR 4064.
The 6 mm Rem. Model 600 still
looks pretty good after 45 years of
shooting. Its stock carries a few wellearned
nicks and scratches. A peek
into its bore shows some wear on
the start of the rifl ing lands. That's
expected, though, as the rifl e has
fi red in excess of 2,250 rounds. To
preserve the bore for more years of
hunting and shooting, two, three-shot
groups were fi red to test the loads
listed in the chart. The diamond ring
still looks good on Gail's fi nger, too,
and the rifl e and ring will be together
on more deer and antelope hunts and
some spring and summer practice in
the years we have ahead of us.
WARNING: Technical data and information contained herein are intended to provide information based
upon the limited experience of individuals under specifi c conditions and circumstances. They do not detail
the comprehensive training, procedures, techniques and safety precautions that are absolutely necessary
to properly carry on similar activity. READ THE NOTICE AND DISCLAIMER ON THE CONTENTS PAGE
OF THIS MAGAZINE. ALWAYS CONSULT COMPREHENSIVE REFERENCE MANUALS AND BULLETINS OF
PROPER TRAINING REQUIREMENTS, PROCEDURES, TECHNIQUES AND SAFETY PRECAUTIONS BEFORE
ATTEMPTING ANY SIMILAR ACTIVITIES.
AMERICANRIFLEMAN.ORG
NOVEMBER 2021
69
http://www.AMERICANRIFLEMAN.ORG

American Rifleman - November 2021

Table of Contents for the Digital Edition of American Rifleman - November 2021

Contents
American Rifleman - November 2021 - Cover1
American Rifleman - November 2021 - Cover2
American Rifleman - November 2021 - 1
American Rifleman - November 2021 - Contents
American Rifleman - November 2021 - 3
American Rifleman - November 2021 - 4
American Rifleman - November 2021 - 5
American Rifleman - November 2021 - 6
American Rifleman - November 2021 - 7
American Rifleman - November 2021 - 8
American Rifleman - November 2021 - 9
American Rifleman - November 2021 - 10
American Rifleman - November 2021 - 11
American Rifleman - November 2021 - 12
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American Rifleman - November 2021 - 17
American Rifleman - November 2021 - 18
American Rifleman - November 2021 - 19
American Rifleman - November 2021 - 20
American Rifleman - November 2021 - 21
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American Rifleman - November 2021 - 24
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American Rifleman - November 2021 - 27
American Rifleman - November 2021 - 28
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