Proud Poppa,
Assuming you can shoot both the 9mm and the .40S&W equally well (a big assumption), then the .40S&W should (theoretically) produce a larger wound channel and more blood loss for a faster incapacitation due to loss of blood pressure. So instead of two 9mm hits stopping a threat in 10 seconds, two .40 hits in the same place and on the same path through the target might stop it a second faster.
Is that significant?
This is all guess work, except the part about the .40 making a larger wound channel.
Keep in mind that all "defensive handgun cartridges" are under powered.
If you knew you were going to a gun fight you would take a major caliber rifle (like the .308)
or a 12 gauge shotgun with 00 buckshot (if you were guaranteed the range was under 25 yards).
Quote:
C0untZer0
If you're going to carry fairly large pistol then, maybe .75" to 1" additional penetration and maybe .025" additional bullet expansion.
But the .40 doesn't allow for carrying the ultra-sub compact - true pocket pistol form factor.
|
I agree with your first sentence.
I need clarification on what is an ultra-sub compact. Does the Kahr PM9 qualify?
__________________
NRA Life Member - Orange Gunsite Member - NRA Certified Pistol Instructor
"When plunder becomes a way of life for a group of men living together in society,
they create for themselves in the course of time a legal system that authorizes it and a moral code that justifies it." Frederic Bastiat