who says the 9mm is an over penetrator, i am talking with JHP ammo, not NATO ball.
for me, well, it hits harder, shoots flatter, and i had 2 glock 9mm's with which i couldn't shot well at all, the 357sig does it all better. so you lose 2 rounds in a mag... thanks to the way our government is neutering our rights you have already lost a lot of rounds!