Nosler Partition Bullets .22 Cal. 60 gr. Spitzer Point 50 pk.Partition buttets have been the benchmark of bullet manufactuerer's over 65 years offering a lead alloy, dual core for superior mushrooming at all velocities, fully tapered copper alloy jacket, an integral partition for expansion and enhanced penetration, dual core construction for maximum in flight and terminal performance and a special crimp locks to resist deformation of heavy magnums