Prairie enemy ammunition is designed to deliver the match-grade accuracy and devastating explosive performance that is expected by the most demanding of varmint hunters.This ammo uses some of the best components available, including nickel- plated cases to help with reliable feeding in semi-autos.Prairie enemy ammunition utilizes our world-famous blitzking bullets that offer high ballistic coefficients and high velocities.Specifications: 223 rem/55 gr/sierra blitzking/20 per box/10 csCaliber: 223 RemBullet Type: Sierra BlitzKingBullet Weight: 55 grMuzzle Energy: 1262 ft lbsMuzzle Velocity: 3215 fpsRounds Per Box: 20Boxes Per Case: 10Application: HuntingCasing Material: BrassHazair: Yes