12
by Stiff
For pistols it’s always:
1. Penetration
2. Shot placement
3. Everything else
Because we’re taught to shoot center mass, any pistol round should have enough energy to defeat the ribcage without getting deflected. Even .22 LR has enough power to punch through a rib bone head on, but if it hits the edge or at an angle, the trajectory may be affected. A long time ago I read postings by a coroner about effects of different pistol rounds. Back then the common 115 grain 9mm ball were often deflected by bone, shifting its path away from vital organs. Heavier calibers like .45 and .40 didn’t have this problem, they trucked along and smashed through. Bullets with more energy like .357 magnum also penetrate straight. I guess you can think of deflection as a negative effect on shot placement.
With marginal rounds like .380 ACP, .38 special, and 9mm my preference is always +P, then more weight. 9mm +P and .38 Spl +P are good enough for self defense regardless of bullet design. As a matter of fact 9mm went from “unacceptable” to “FBI standard” due to +P.
Having said this, any hit in vital organs by a common pistol bullet is basically fatal. Lower energy bullets simply lowers the probability of them reaching said organs.
Glad that federal government is boring again.