Doubletap Ammunition Bonded Defense 10mm Auto 180 grain Jacketed Hollow Point 20 Rounds Pistol Ammo. This Doubletap Ammunition Ammunition features Jacketed Hollow Point (JHP) bullets that deliver strong stopping power perfect precision and consistency. With amazing deals every day on Ammunition and other high-quality pistol ammo from trusted brands like Doubletap Ammunition you re sure to find the best round for the hunting grounds or the range. Stock up today to save big on ammo and other top-tier tactical hunting and outdoor gear at OpticsPlanet. Specifications for Doubletap Ammunition Bonded Defense 10mm Auto 180 grain Jacketed Hollow Point Pistol Ammunition 10MM180BD20: Manufacturer: Doubletap Ammunition Caliber: 10mm Auto Number of Rounds: 20 Bullet Type: Jacketed Hollow Point (JHP) Bullet Weight: 180 grain