Liberty Civil Defense 357 SIG 50gr HP Handgun Ammo - 20 Rounds - The Civil Defense 357 Sig is one of Liberty's best rounds for self-defense. It has more kinetic energy than most 45 ACP self-defense rounds but only weighs as much as standard 9mm rounds. Liberty Civil Defense 357 SIG 50gr HP Handgun Ammo is a very underappreciated caliber. Liberty's lead free 357 Sig goes 2300 FPS out of a 4 barrel. A feat that has never been done before in guns you can comfortably carry concealed. 2300 FPS; 20 Rounds; 50gr Bullet; Great for Self-Defense;