While I wouldn't want to be shot by one, I remember one newspaper report of a man who was shot 3 times with a 25 ACP by an armed robber. Not one single round penetrated through his leather bombers jacket, his only injury was 3 small welts or bruises. As for the armed robber, he shouldn't have chosen to take on an ex paratrooper, his elbow was completely dislocated when his victim got mad and disarmed him. Probably **** ammo, but still, if it won't go through cowhide I'm not going to carry one.