Underwood Ammo .45 Colt 250 Grain Jacketed Hollow Point Nickel Plated Brass Cased Pistol Ammo 20 Rounds. Specifications for Underwood Ammo .45 Colt 250 Grain Jacketed Hollow Point Nickel Plated Brass Cased Pistol Ammunition: Manufacturer: Underwood Ammo Caliber: .45 Colt Number of Rounds: 20 Bullet Type: Jacketed Hollow Point (JHP) Bullet Weight: 250 grain Cartridge Case Material: Nickel Plated Brass Muzzle Velocity: 960 ft/s Muzzle Energy: 512 ft-lbs Application: Hunting Package Type: Box Primer Style: Centerfire Lead Free: No Package Contents: Underwood Ammo .45 Colt 250 Grain Jacketed Hollow Point Nickel Plated Brass Cased Pistol Ammo Underwood Ammo 433: .45 Colt 250 Grain Jacketed Hollow Point Nickel Plated Brass Cased Pistol Ammo 20 Rounds