Ammunition Specifications Manufacturer: Blazer(R) Part #: 3570 Caliber: 45 Auto Bullet Weight: 230 Grain Bullet Type: Full Metal Jacket Bullet Style: Round-Nose Case Type: Aluminum Muzzle Velocity: 845 fps Muzzle Energy: 365 ft. lbs. Quantity: 50 Rounds ATK's popular brand of Blazer(R) 45ACP ammunition is a great alternative to reduce the cost of practice shooting, while still giving shooters the quality and reliability they need. If you want great, dependable ammunition, without the high-end cost, this 45 ammo from Blazer(R) is your best choice. The cases are made from aircraft-grade aluminum, which is heat-treated and provides the same great performance of brass-case ammo at a more economical price. Loaded with quality bullets and reliable ignition primers Greatly reduces the cost of practice