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.Specifications: Platform: Pistol Ammo Application: Defensive Ammo Type: Jacketed Hollow Point (JHP) Caliber: 40 S&W Grain Weight: 165 Grain Qty Per Package: 50 Test Barrel Length (in): 4.0 1/16 Muzzle Velocity: 1,090 fps Muzzle Energy: 435 ft-lbs Bullet Diameter: 10.173 mm Bullet Length: 14.351 mm Lead Free: No Staked Primer: No