Effective selfdefense requires ammunition that provides consistent expansion optimum penetration and superior terminal performance. HST is the duty load of choice for law enforcement officers throughout the world. Its specially designed hollow point wont plug while passing through a variety of barriers and the bullet jacket and core hold together to provide nearly 100 percent weight retention through even the toughest materials.Premium Personal Defense 357Mag 154gr HST Jacketed Hollow Point 20 Per Box