Best defense round against un-armored criminals - Liberty Ammunition Civil Defense 9mm Luger +P 50 grain Hollow Point Brass Cased Centerfire Pistol Ammunition

These 50 grain 9mm Liberty rounds have been recorded at over 2200fps out the barrel. Figure the fps yourself. I have used them to put predators I have trapped out of their misery. The round will leave a 2.5-3 inch entry hole, disintegrate and not go out the other side, very useful taking on a robber in a crowd. If the assailant has a heavy leather jacket or coat, forget it, unless you can hit the head. Get yourself a couple of small water melons and test it yourself, one with a standard 9mm round, the other with the 50gr Civil Defense round.
Another way, a 15-20 lb predator shot with a FMJ 9mm round, through the body, might look at you and walk away, dying about 100 yards away( I witnessed this ), while every one I have shot with the Liberty 50gr round died instantly.
In short, a great round to stop an assailment in a T-shirt dead in his tracts, but you need another option for those in armor or a thick jacket.