Custom-grade ammunition from the factory. Built to the tightest tolerances for peak performance rivaling and sometimes surpassing handloads in many guns. The A-Max may be the most technologically advanced bullet ever designed. The aerodynamic secant ogive profile, sharp, pointed tip and unmatched concentricity give it an extremely high ballistic coefficient for near perfection in flight. After closely studying the performance of bullets for more than half a century, Hornady has incorporated every aspect of what makes a bullet accurate into the A-Max. This ammunition is new production, non-corrosive, in boxer primed, reloadable brass cases. Not intended for use in semi automatics. Technical InformationCaliber: 308 WinchesterBullet Weight: 155 GrainsBullet Style: A-Max PalmaCase Type: Brass Ballistics Information: Muzzle Velocity: 2850 fpsMuzzle Energy: 2795 ft. lbs.