Atomic's tactical cycling subsonic is unlike traditional high powered rifle ammunition.Unsuppressed, it is as quiet as most 22 lr and has minimal felt recoil.These relatively innocuous-sounding cartridges, with their low recoil and report, serve professionals with an alternative to much louder standard power rifle cartridges allowing faster follow up shots and better full auto accuracy with the added safety of not penetrating level 2 and higher armor worn by many law enforcement and military professionals.Atomic's tactical cycling subsonic in.308 winchester produces more energy and power than most 10mm cartridges and delivers excellent accuracy at 100 yards from rifles with barrel twist rates of 1 in 10" or faster.Caliber: 308 WinBullet Type: Soft Point Round NoseBullet Weight: 260 grMuzzle Energy: 538 ft lbsMuzzle Velocity: 1050 fpsRounds Per Box: 50Boxes Per Case: 10Application: Home DefenseCasing Material: BrassHazair: Yes