10MM Auto Federal Personal Defense HST JHP (P10HST1S)10MM Auto Federal Personal Defense HST JHP (P10HST1S) Effective self defense requires ammunition that provides consistent expansion, optimum penetration and superior terminal performance. And HST delivers. That's why it's already the duty load of choice for law enforcement officers throughout the world. Its specially designed hollow point won't plug while passing through a variety of barriers, and the bullet jacket and core hold together to provide