This is 327 Federal Magnum Corbon 75gr. DPX Ammo. DPX is a solid copper hollowpoint bullet that combines the best of the lightweight high speed JHPs and the heavy weight, deep penetrating JHPs. Recoil and recovery between shots are similar to the light weight rounds while soft tissue penetration is similar to the heavy weight rounds. Hard barrier penetration on auto glass and steel are no problem for this all copper hollowpoint round. You get superb performance on these hard barriers while still maintaining safe soft tissue penetration depths. This ammo is packed 20rds. per box.