Winchester Super Clean 45 ACP AUTO Ammo 160 Grain FMJ Lead Free ammo review offers the following information; These .45 ACP loads are built using traditional methods but with a slight component shift that is intended to be less harsh on both gun and shooter. For starters, each round is ignited by a lead-free Boxer primer which won’t leave behind caustic chemicals in your firearm or personal airspace. The resultant spit of flame gives life to a consistent measure of high-energy, nontoxic propellant. This cartridge profile is topped off with a 160-grain full metal jacket (FMJ) projectile which has a unique core made up of zinc instead of lead; this not only cuts down on bore residue but keeps lead particles from building up in and around your range’s backstop. While 160 grains is light for the .45 Auto caliber, a muzzle velocity of 1,100 feet per second ensures that this will be an effective training load.