Insist on more from your 5.7x28mm. Speer has broken new ground for the cartridge with the first 5.7x28mm round specifically designed for self-defense. Like all Gold Dot ammunition, the bullet is built using Speer's exclusive Uni-Cor method. The jacket is bonded to the core one atom at a time, virtually eliminating core-jacket separation and creating a projectile that's accurate, tough and consistent through all common barriers. High-quality brass, reliable primers and specifically formulated propellant produce optimal feeding and ballistics in 5.7x28mm firearms. First 5.7x28mm round designed specifically for self-defense Consistent penetration and expansion through common barriers Extremely uniform jacket maximizes accuracy Gold Dot technology virtually eliminates core-jacket separation 50 round box 5.7x28mm shot through 5" test barrel for published velocity Specifications: Caliber: 5.7x28mm Grain Weight: 40 Bullet Style: Gold Dot Hollow Point Muzzle Velocity: 1800fps Package Quantity: 50 Rounds Usage: Self-Defense