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Don't say 9mm around me!! I can't ignore it, lol!
But yeah, the difference in 9mm and .40 is tiny, much smaller than many people seem to think. Same with the 9mm vs. .40S&W vs. .45ACP comparison. Check out www.brassfetcher.com for more details. In the end they all are capable of similar expansion and penetration with today's ammo. The .45ACP does tend to edge the others out, but it's not by much at all with good ammo. A 9mm FMJ is going to overpenetrate big time IMO, as you found out.
A good 9mm round should penetrate 12"+ corrected in ballistic gelatin while expanding to .6"-.7", and that's not uncommon with today's bullets.
Federal's .380 Auto Hydrashock expanded to about .45" and penetrated 12" when fired out of a Kel-Tec P3AT (2.75" BBL!!!). The .380 Auto can be just fine with the right ammo. I love technology.
Don't say 9mm around me!! I can't ignore it, lol!
But yeah, the difference in 9mm and .40 is tiny, much smaller than many people seem to think. Same with the 9mm vs. .40S&W vs. .45ACP comparison. Check out www.brassfetcher.com for more details. In the end they all are capable of similar expansion and penetration with today's ammo. The .45ACP does tend to edge the others out, but it's not by much at all with good ammo. A 9mm FMJ is going to overpenetrate big time IMO, as you found out.
A good 9mm round should penetrate 12"+ corrected in ballistic gelatin while expanding to .6"-.7", and that's not uncommon with today's bullets.
Federal's .380 Auto Hydrashock expanded to about .45" and penetrated 12" when fired out of a Kel-Tec P3AT (2.75" BBL!!!). The .380 Auto can be just fine with the right ammo. I love technology.