"Armor Performance Ballistic Alloy the non-lead Alloy Airgun Ammunition that increases piercing power up to 20% over lead while maintaining match grade accuracy. Specifically designed as a hunting load the PBA Armor ammunition is 50% harder than lead causing penetration to be enhanced by up to 100% in tests in actual hunting situations as well as ballistic mediums. Armor PBA test results show ballistic stability at super-sonic speeds and up to 90% weight retention using the semi-pointed design. Comes in a 80 count .177 cal. rocket package. Do not use with airgun traps be sure of your target and beyond.