Does anyone know of any actual tests of shotgun loads on soft body armor? Buckshot and slugs? I am curious, because I was under the impression that the projectile did not need to actually penetrate the material in order to be lethal (or at least cause fairly devastating injuries). I'm assuming buckshot would not work very well, but the sheer impact force of a slug would certainly cause an attacker some issues; even if not immediately lethal. A 1oz slug at 1600 fps comes in at 2487 ft lbs. of energy (at the muzzle), that's gotta count for something.