This is .454 Casull Hornady 240gr. Jacketed Hollow Point Extreme Terminal Performance (XTP) Ammo. Hornady's pistol ammo delivers both accurate and dependable knockdown power. Controlled Expansion XTP bullets are famous for their ability to expand reliably across a wide range of velocities. The XTP bullet was specially built to withstand incredible elocities, and still deliver controlled expansion and weight retention. Special features in the nose facilitate and control expansion on impact. This ammo is brass cased, boxer primed, non-magnetic, and non-corrosive. It comes packed in 20rd. boxes. Muzzle Velocity: 1900 fps.