Sierra SportsMaster bullets are engineered to provide consistent, reliable expansion over a wide range of velocities. The featured Power Jacket insures unform expansion along serrated lines. This directly results in more consistent weight retention and the maximum energy transfer. This is not loaded ammunition. Notes:Flat base with exposed lead core.This is a lead core copper jacketed bullet with an exposed lead nose. Designed to shoot in the 7.62x25 Tokarev. This is designed for HANDGUNS ONLY.Buyers should be aware the Thompson Contenders chambered for the 32-20 have a bore diameter of .308 NOT .312 as in all other applications.