Fiocchi Hyperformance Defense 5.7x28mm 35grain Jacketed Frangible Brass Cased Pistol Ammo 50 Rounds. Loaded at the state-of-the-art Fiocchi facility in Ozark Missouri Fiocchi Hyperformance Match ammunition provides precision you can count on at a factory-loaded price you can afford. MatchKing is a registered trademark of Sierra Bullets. Specifications for Fiocchi Hyperformance Defense 5.7x28mm 35grain Jacketed Frangible Brass Cased Pistol Ammunition: Manufacturer: Fiocchi Caliber: 5.7x28mm Number of Rounds: 50 Bullet Type: Jacketed Frangible Bullet Weight: 35 grain Cartridge Case Material: Brass Muzzle Velocity: 2300 ft/s Muzzle Energy: 386 ft-lbs Application: Personal Defense Package Type: Box Primer Style: Centerfire Lead Free: No Package Contents: Fiocchi Hyperformance Defense 5.7x28mm 35 Grain Jacketed Frangeable Brass Cased Pistol Ammunition Fiocchi 57JF35: Hyperformance Defense 5.7x28mm 35 Grain JF Brass Cased Pistol Ammo 50 Rounds