Different shooters have different needs, limitations and firearms. Yet for all of those variables, rimfire has never been a practical option for self-defense - until now. Introducing Punch(TM)Personal Defense rimfire from Federal Premium. The loads' nickel-plated lead-core bullet is propelled at extreme velocities and engineered to minimize expansion to hit critical penetration depths through short-barrel handguns. Specifications and Features: Caliber: 22 WMR Grain Weight: 45 Bullet Style: Punch Jacket Hollow Point Muzzle Velocity: 1000 Ballistic Coefficient: .136 Package Quantity: 50 Usage: Self-Defense