Designed for hunting, self-defense and law enforcement, the Hornady XTP .45 300-Grain Hollow Point Handgun Bullets feature cannelures to help achieve accurate, consistent crimping and varying jacket thickness to control expansion down the length of the bullet. Precise serrations divide the XTP® into symmetrical sections, strategically weakening the jacket and initiating controlled expansion, even at low velocities. Hornady XTP .45 300-Grain Hollow Point Handgun Bullets - Reloading at Academy Sports