Fishman777
Any handgun caliber, even .22 lr, will shoot through walls, house/apartment doors, and even car doors. Real life isn't like hollywood and internet chatter. If someone shoots *any* bullet at you, it can easily kill you. I know, I know, the popular theory is that you need a big, slow moving bullet to transfer its energy to the target. Sounds great, but many people get killed every year with "mouse" guns.