Grizzly Cartridge 10 mm 180 Grain Jacketed Hollow Point Pistol Ammo 20 Rounds. Grizzly Ammo GC10M4 Handgun 10mm Auto 180 gr Jacketed Hollow Point (JHP) 20 Bx/ - Specifications for Grizzly Cartridge 10 mm 180 Grain Jacketed Hollow Point Pistol Ammunition: Manufacturer: Grizzly Cartridge Caliber: 10mm Auto Number of Rounds: 20 Bullet Type: Jacketed Hollow Point (JHP) Bullet Weight: 180 grain Cartridge Case Material: Brass Muzzle Velocity: 1350 ft/s Muzzle Energy: 728 ft-lbs Application: Target Self-Defense Package Type: Box Primer Style: Centerfire Lead Free: No Package Contents: Grizzly Cartridge 10 mm 180 Grain Jacketed Hollow Point Pistol Ammunition Grizzly Cartridge GC10M4: 10 mm 180 Grain Jacketed Hollow Point Pistol Ammo 20 Rounds