NEW! - Jeffersonian
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.41 AVENGER<br />
Continued from page 61<br />
MORE LOADS<br />
The heaviest loads utilized Blue Dot and<br />
either of the harder primers in .45 Winchester<br />
Magnum cases. With the Sierra<br />
l70-grain JHC bullet, 12 grains and #200<br />
primers, they yielded 1,224 fps and produced<br />
a 1.34-inch group of four shots, plus<br />
a flier. Maximum was 12.5 grains for 1,301<br />
fps and a 2.26-inch group. Th~t's<br />
640 foot pounds of energy, matching the<br />
claimed top power of the Bren 10. With<br />
# 350 primers, the same velocity was<br />
reached; cratering was excessive, even<br />
though a l.25-inch group was printed.<br />
With W-W 7M primers and everything<br />
else unchanged I got 1,271 fps with negligible<br />
cratering and a L43-inch group.<br />
I grouped and clocked a total of 33 different<br />
loads with the Sierra l70-grain JHC<br />
bullet and only a few maximum and overmaximum<br />
combinations grouped over two<br />
inches. This bullet is a top choice for almost<br />
any purpose,.including hunting.<br />
Bullseye gave good loads; 6.0 grains behind<br />
the Sierra 170 gave 1,074 fps and<br />
made a 1.3 I-inch group. Upping that to 6.5<br />
grains produced 1,123 fps, and an even better<br />
l.28-inch group; but the # 350s cratered<br />
too much. Unique (7.0 grains) in<br />
strong brass gave a fine one-inch group<br />
(941 fps, W-W ·7Ms) and in Federal .45s a<br />
L23-inch group (i,Oll fps, CCI # 350s).<br />
For target and practical shooting, cast<br />
bullets were excellent. SSK offers two new<br />
designs, a truncated cone (TC) and a<br />
roundnose, both weighing 185 grains.<br />
Driven at 1,000 fps, either meets IPSCs<br />
"major caliber" requirements. I made severalloads<br />
with the cast 185-grain TC and it<br />
grouped brilliantly.<br />
For a good medium load, 6.5 grains of<br />
Winchester 231 in .45 Winchester Magnum<br />
cases, with W-W 7M primers, gave<br />
1,060 fps and produced a 1.40-inch group.<br />
With 7.0 grains the group was a tight<br />
L04-inch, but the # 350s cratered and<br />
some leading began to show up at l,ll4 fps.<br />
Blue Dot (il grains) and 7M primers combined<br />
to make a L04-inch group at 1,097<br />
fps.<br />
In W-W .45 ACP brass, 7M primers and<br />
7.0 grains of 231 behind the 185-grain TC<br />
produced another L04-inch group at 1,077<br />
fps. Unique (7.0 grains) pushed that bullet<br />
to 990 fps, grouping 1.13-inch and 10 grains<br />
of Blue Dot grouped almost as well: 1.28<br />
inch at 987 fps.<br />
One group showed that the cast 185<br />
grain RN did nicely: 1.48 inch with 6.~<br />
grains of Winchester 231 for 1,061 fps.<br />
I fired two groups with the Sierra 210<br />
grain JHC, both with 6.0 grains of powder<br />
in Federal .45 ACP cases and # 350 primers.<br />
Winchester 231 gave 956 fps and a 1.36-<br />
inch group, and Unique made a neat 1.16-<br />
inch group at 854 fps. Much more could<br />
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77