SIG V-Crown defensive rounds combine perfected material specifications and fine-tuned design innovations including a stacked hollow point cavity to deliver exceptional on-target energy with maximum weight retention and optimal expansion for ultimate stopping power. – Caliber: 45 Automatic Colt Pistol – Bullet Type: Jacketed Hollow Point – Bullet Weight: 185 gr – Muzzle Energy: 407 ft / lbs – Muzzle Velocity: 995 fps – Rounds Per Box: 50