Doubletap Ammunition Defense 380 ACP 80 Gr Barnes TAC-XP Lead Free 20. This round virtually has no muzzle flash and is an excellent defensive load with excellent penetration. Specifications for Doubletap Ammunition 380A80X Defense 380 ACP 80 Gr Barnes TAC-XP Lead Free 20 B: Manufacturer: Doubletap Ammunition Caliber: .380 ACP Number of Rounds: 20 Bullet Type: Jacketed Hollow Point (JHP) Bullet Weight: 80 grain Cartridge Case Material: Brass Muzzle Velocity: 1100 ft/s Application: Self-Defense Primer Style: Centerfire