home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!haven.umd.edu!darwin.sura.net!dtix!mimsy!ENGLISH.AS.UA.EDU
- From: DHORTON@ENGLISH.AS.UA.EDU (David A. Horton)
- Newsgroups: rec.guns
- Subject: Re: Handgun stopping power. The velocity myth
- Message-ID: <MAILQUEUE-101.930125134913.352@english.as.ua.edu>
- Date: 26 Jan 93 01:51:28 GMT
- Sender: magnum@mimsy.umd.edu
- Organization: University of Alabama English Dept.
- Lines: 40
- Approved: gun-control@cs.umd.edu
-
- Well, I've browsed a few notes on this subject and see that the
- proverbial can of worms has been spilled again.
-
- One thing I see as central to this argument of "stopping power" is
- the idea of velocity. I am continually hearing comments about "the
- golden bullet is the one with the most velocity...." etc. Well, I'm
- skeptical of the so-called magic bullet that can gurantee a one-shot
- stop, but lets consider what the market of bullets has to offer, and
- what common sense might be able to tell us.
-
- The late Elmer Keith firmly believed that a bullet's "killing power"
- was closely related to the bullet weight times its velocity. This is
- otherwise known as 'momentum'. The precise defenition of momentum is
- mass times velocity.
- Let's turn our attention to what stops a perp. Penetration!! More
- specifically, penetration that EITHER interrupts the central nervous
- system (a brain or spinal cord shot), or a very large wound cavity
- that will cause severe interruption of vital organ functioning. Yeah,
- blood loss is a good idea, but it may take several seconds or minutes
- for the target to bleed to death or pass out. What we want is the
- largest possible wound channel, and the key to penetration is bullet
- momentum. Actually, to be more specific, I think we can think of it
- as a bullets momentum density (the momentum of a bullet divided by
- its frontal area), and not bullet "energy". Now I'm not saying
- bullet energy doesn't matter in stopping power, just give me a sec
- and I'll explain.
- If you follow this theory, you'll see that it favors big, slow
- bullets, like the .45-70 and the .45ACP, over small, hi-velocity
- rounds that typically disintegrate upon impact. Number crunching will
- show that heavy bullets (ie, 230gr .45 ACP) loaded to a moderate
- velocity will ON AVERAGE (because there is no such thing as
- consistency in our universe), penetrate over a 147gr. 9mm. Now I
- don't want to turn this into a mindless debate over the 9mm vs. the
- .45, but I do want folks to consider this for a sec.
-
- Anyone have anything to add??
-
-
- David A. Horton
- University of Alabama
-