Underwood Ammo .45 ACP +P 135 Grain Solid Monolithic Nickel Plated Brass Cased Pistol Ammo 20 Rounds. Specifications for Underwood Ammo .45 ACP +P 135 Grain Solid Monolithic Nickel Plated Brass Cased Pistol Ammunition: Manufacturer: Underwood Ammo Caliber: .45 ACP +P Number of Rounds: 20 Bullet Type: Monolithic Bullet Weight: 135 grain Cartridge Case Material: Nickel Plated Brass Muzzle Velocity: 1335 ft/s Muzzle Energy: 534 ft-lbs Application: Target Self-Defense Package Type: Box Included Accessories: None Primer Style: Centerfire Sectional Density: 0.083908573218621 Lead Free: Yes Dimensions: 1.45 X 2.65 X 3.15 in Package Contents: Underwood Ammo .45 ACP +P 135 Grain Solid Monolithic Nickel Plated Brass Cased Pistol Ammo Underwood Ammo 844: .45 ACP +P 135 Grain Solid Monolithic Nickel Plated Brass Cased Pistol Ammo 20 Rounds