Most of us with any knowledge in firearms agree that no handgun caliber can be relied upon for a one shot stop. For those unfamiliar with the phrase it simply means having a very high probability of stopping a bad gun with only one shot. Well this notion isn’t correct because the Germans came up with a pistol caliber that can stop a man in one shot and The Firearm Blog has a piece on it. Hit the link and check out the German grenade pistol.