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Yes it is David. (75 grain Interlock HD SBR bullet). ((Hornady BLACK 81296)) - 5.56 NATO - 75 grain Interlock HD SBR bullet - Ballistic coefficient G1 .230 - Sectional density .214 - Reloadable brass case - Test barrel 11.5" - Muzzle velocity 2321 fps - Velocity at 100 yards 1975 fps - Velocity at 200 yards 1663 fps - Velocity at 300 yards 1395 fps - Muzzle energy 897 ft/lbs - Energy at 100 yards 649 ft/lbs - Energy at 200 yards 461 ft/lbs - Energy at 300 yards 324 ft/lbs - Uses: Hunting, Target Shooting, and Competition.