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发帖数: 11154 | 1 http://handgunsmag.com/ammunition/loads_for_snub_nose_revolvers_111610/index.html
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However, velocity loss is quite significant with a two-inch barrel, and as
velocity diminishes, bullet expansion decreases and penetration increases.
Therefore, the most important question for the pocket revolver owner is,
Just how good, terminally speaking, is the fodder occupying the cylinder?
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The test platform was a Crimson Trace laser grip-equipped S&W Model 49
Bodyguard. I engaged one m.o.a. dots at 15 yards, the Crimson Trace laser
providing maximum feedback on my hold. These ergonomic grips also
significantly increased control on the gun, which is no small matter when
you're shooting +P fodder out of a snubby.
The S&W M49 Bodyguard with Crimson Trace grips was the test platform.
Cartridges with expanded bullets (from l.): Remington Ultimate Home Defense,
International, Winchester PDX1, Speer Gold Dot and Hornady Critical Defense
FTX.
Top to bottom: Speer Gold Dot hollowpoint penetrated 14.5 inches and
expanded to 0.51 inch; and Hornady Critical Defense FTX, 15.8/0.45.
Top to bottom: Remington Ultimate Home Defense bonded penetrated 15 inches
and expanded to 0.54 inch; International, 11.8/0.37 (largest fragment); and
Winchester PDX1 bonded, 12/0.66.
The FBI performance standard for penetration is 12 to 18 inches. Even at the
risk of overpenetration, the FBI favors deep penetration but acknowledges
that a balance between bullet expansion--which creates larger wound channels
but frequently less penetration--and penetration must be pursued.
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Performance Notes
I don't know what Remington is using for this .38 Special +P load, but the
125-grain Ultimate Home Defense bonded jacketed hollowpoint round lights up
the range and announces its presence with real gusto. The Perma-Gel tests
were conducted at three yards, and the Remington was one of the rounds
running so hot that it seared the field jacket that covered the Perma-Gel
and generated a brief puff of smoke from the fabric. The bullet itself
blossomed to 0.54 inch and came to rest sideways 15 inches into the test
medium.
International's standard-pressure 100-grain hollowpoint posted a high test
velocity of 958 fps and was the most pleasant to shoot from the S&W. It was
the only totally "green" round in the test and is designed to fragment in
tissue like a high velocity varmint round.
International's bullet started to fragment within 11/2 inches of entry, and
it penetrated 61/2 inches--producing a cone-like pattern of fragments that
radiated four inches from the primary wound channel, creating numerous
secondary wound channels. A .37 caliber chunk of the bullet penetrated 113/4
inches in a straight line.
Winchester's 130-grain PDX1 +P exhibited superb accuracy and just made the
FBI's minimum penetration criteria while topping the group in expansion. A
nice temporary stretch cavity occurred at three inches. The bullet expanded
to 0.66 and came to rest sideways at the 12-inch mark.
Speer's +P 135-grain Gold Dot hollowpoint vied with the Remington load for
the most fireworks. It penetrated 141/2 inches and expanded to 0.51.
Although the Speer was level at rest, it showed evidence of yawing during
its last few inches of travel as it created a 4x11/2-inch temporary stretch
cavity in the Perma-Gel. The recovered bullet had fabric from the T-shirt
lodged in its hollowpoint cavity.
Because of its excellent standard pressure performance that approached its +
P siblings, Hornady's Critical Defense FTX load deserves special mention.
High velocity was 922 fps, and Hornady's quality control was evident as it
produced the smallest average group at 0.82 inch and had a standard
deviation of just 2.9. The round punched through 153/4 inches of Perma-Gel--
the deepest penetration of the test--and opened up to .45 inch.
All the ammunition tested performed as advertised through light clothing,
which was gratifying. With a balance between penetration and expansion in
mind, Remington's Ultimate Home Defense round appears to have come closer to
that ballistic Holy Grail than the others. While its accuracy was not
stellar, it is more than adequate for close quarters. |
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