SIG SAUER supersonic rounds feature a 110gr Projectile for superior accuracy and minimal dispersion when suppressed. Consistent bullet weight retention with minimal velocity variations results from optimized shell case metallurgy with premium primers. Rounds are precision-loaded using state-of-the-art electromechanical monitoring for geometric conformity. – Platform Rifle – Ammo Application Defensive Rifle – Ammo Type Open Tip Match (OTM) – Caliber 300BLK – Grain Weight 110 Grain – Qty Per Package 20 – Test Barrel Length (in) 9.0 ± 1/16 – Muzzle Velocity 2100 fps – Muzzle Energy 1077 ft-lbs – Bullet Length 21.3106 mm – Case Type Brass – Lead Free No – Staked Primer Yes