FURY Hybrid Case Technology allows for increased muzzle velocity and greater energy than traditional brass cases. SIG FURY Hybrid case ammunition outperforms standard ammunition in a similar size rifle with less bullet drop and increased energy on target. Hybrid Case Technology was developed for the U.S. Militarys Next Generation Weapon Systems. - FEATURES: - SIG FURY Hybrid Case Ammunition outperforms traditional brass case ammunition with increased velocity less bullet drop and increased energy on target - Legendary Sierra MatchKing HPBT specifically developed to perform in the higher pressure 277 SIG FURY Hybrid Match round. - Delivers magnum performance in a standard short action rifle - Caliber 277 SIG FURY - Grain Weight 155 Grain - Qty Per Package 20 - Test Barrel Length (in) 24.0 1/16 - Muzzle Velocity 3000 fps - Muzzle Energy 3097 ft-lbs - Ballistic Coefficient (G1) 0.549 - Case Type Hybrid