Doubletap Ammunition Tactical 45 Colt LC 160 Gr Barnes TAC-XP Lead. It is also an excellent defensive load with excellent penetration and expansion. Specifications for Doubletap Ammunition 45CS160X Tactical 45 Colt (LC) 160 Gr Barnes TAC-XP Lead F: Manufacturer: Doubletap Ammunition Caliber: .45 Colt Number of Rounds: 20 Bullet Type: Jacketed Hollow Point (JHP) Bullet Weight: 160 grain Cartridge Case Material: Brass Muzzle Velocity: 1175 ft/s Application: Self-Defense Primer Style: Centerfire