home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!haven.umd.edu!mimsy!smoke.brl.mil
- From: gwyn@smoke.brl.mil (Doug Gwyn)
- Newsgroups: rec.guns
- Subject: Re: Best stopping power in handguns?
- Message-ID: <19595@smoke.brl.mil>
- Date: 24 Jan 93 03:32:49 GMT
- Sender: magnum@mimsy.umd.edu
- Organization: U.S. Army Ballistic Research Lab, APG MD.
- Lines: 51
- Approved: gun-control@cs.umd.edu
-
-
- In article <1993Jan22.141008.10672@samba.oit.unc.edu> Harry.Johnson@lambada.oit.unc.edu (Harry Johnson) writes:
- #Or have I asked some sort of age-old debate question that has no clear
- #answer?
-
- Well, there is a clear answer, but not a simple one. There is a
- definite positive correlation, taken over all kinds of ammo with
- nearly any reasonable relative statistical weighting, between
- projectile energy and likelihood of stopping a living target.
- However, there are so many factors involved that even if you try
- to set up ideal test situations you don't get the same results
- each time from multiple instances of the same test conditions.
- The whole business has to be treated statistically and thus the
- criteria MUST allow for a certain amount of "fuzziness" in the
- answer to such questions.
-
- Reports from actual shooting incidents have shown .45 ACP to be
- fairly effective against typical unarmored assailants, ASSUMING
- a good expanding hollowpoint loading such as SilverTip or
- Hydra-Shok is used. FMJ ("ball") ammo isn't as effective, and
- it isn't hard to understand (more or less) why that is so.
-
- The "hot" (+P, +P+) 9x19mm loads were developed for use in
- modern guns that could tolerate the higher pressures because
- at SAAMI pressures 9mm Luger did not seem to be doing a good
- enough job. Hollowpoints expand best at higher speeds so
- boosting the speed slightly helped expansion, thus stopping
- potential, significantly. Another way to boost speed is to
- reduce bullet mass, thus the 115gr 9mm loads. Of course
- there is a tradeoff in that a sufficiently low mass projectile
- would not do as much damage to the target as would a more
- massive one.
-
- Full-load 10mm may actually have worse average results in
- self-defense shooting than 45 ACP, when bullet styles are
- similar. On the other hand there can be situations where
- the additional penetration is useful.
-
- In summary, if you choose the best defense loads in .45 ACP,
- you should expect approximately as high a probability of a
- shot stopping an assailant as with the best loads in other
- handgun calibers, and better than in many calibers. My
- choice was .40S&W which has similar stopping properties to
- .45 ACP (SAAMI pressure limits being observed) in a smaller
- or more capacious weapon, but apart from the capacity issue
- (which should seldom matter with Glock model 21) and size
- (which matters only for concealment and how it fits one's
- hand), there is no functional reason for choosing a smaller
- caliber over .45 ACP. There could be a savings on ammo
- cost using 9mm, though.
-
-