To add to the thread:http://www.tactical-life.com/firearm...choose-9mm-40/
I have always been a 9mm guy. (380's when deep concealment required)
Cody
That a well-regulated militia, composed of the body of the people, trained to arms, is the proper, natural, and safe defense of a free state;
Years ago (up till the 80's) most 9mm NATO was a screamer.
IVI (Canadian) 9mm ball was designed primary for the C1 (Sterling) SMG - and was nasty on handguns - even the BHP's did not like it for very long, and it tore the ass out of the Sig P22X series guns in the CF. -- think ~ 1400fps from a BHP.. it was then downloaded in the 90's when the SMG had been replaced, and the requirement for a SMG load disappeared and longevity of the pistols were a concern.
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Brit and Aussie was the same based on ammo samples I had at the time.
As the US Mil never had a general issue 9mm SubGun - I don't think that M882 ball ever was loaded to the levels (think ++P++ ) that many of the other NATO Armies loaded 9mm ball to (I have nothing to base that on - other than reasonable assumption).
Kevin S. Boland
Director of R&D
Law Tactical LLC
www.lawtactical.com
kevin@lawtactical.com
407-451-4544
MacPherson's book is quite readable and answers all sorts of questions that I have puzzled over about momentum and other physics issues.
Here is the section you are asking about.
“Bullet Penetration--Modeling the Dynamics and the Incapacitation Resulting from Wound Trauma”.
by Duncan MacPherson
Second Edition 2005
Energy in Bullet impact P 9-13
Energy and Damage P 13-16
Summary
Attempt to determine bullet effectiveness or assign WTI by asserting bullet kinetic energy are doomed to failure for two interconnected reasons:
1) damage is done by stress (force), not energy,
2) an indeterminate by usually large amount of the bullet kinetic energy leads to tissue stresses that are not large enough to cause trauma (especially in hand gun loads)
Oh what a ......shame. Too bad as I have helped train thousands of trainees at the SC Criminal Justice Academy. We see a strong majority of departments using the 40 S&W. So much so that when a different caliber is used, it gets our attention.
The FBI changing to 9mm will be interesting to watch to see if has any effect on choices in the future.