I shot an antelope with the 120 BT at about 80 yards with my 264. He was quartering pretty hard toward me, the bullet hitting the front part of the shoulder. It pretty much destroyed that front quarter, but it turned the lungs to jelly. He died right quick. A little too violent when hitting any major bones. I have killed several whitetails with that bullet, but always waited for a broadside rib shot. I never got an exit on those shots, but it was always a fast kill. I loaded those Noslers over IMR 4831 out of a 27" barrel. They are very accurate and shoot flat.