The JHP45, and 4595's will pretty much feed mudballs. I never found a JHP either one of them won't eat. Never had a jam. Steel, aluminum, brass etc. The Hornady XTP is GTG in about any gun due to the profile on the nose of the round is well designed for feeding. Supply is at scary low reserves right now. YMMV. I wouldn't blow a bunch of ammo at your range sessions until you've amassed a decent supply.