Hornady XTP Bullets 38 Caliber (357 Diameter) 180 Grain Jacketed Hollow Point (100pk)Hornady XTP bullets were designed for hunting, self defense, and law enforcement. One of the great things about the XTP bullet is reliable performance, it features controlled expansion where six serrations divide the bullet into six symmetrical sections. These sections weaken the jacket to allow controlled expansion at low velocities and ensures fragmentation does not occur at high velocities. The XTP bullet is really known for its stopping power.