Deep Penetration With This Quality Ammunition 20 shells per box Triple-Shok X Bullet Vital-Shok All copper hollow point design AR hunters need a reliable bullet to bring down the big one, compare the Federal Barnes Triple-Shok X Bullet Vital-Shokammunition to the ammo you are using now. The Barnes Triple-Shot X Bullet made entirely out of copper with a hollow point design that will reliably penetrate and then retain almost 100 percent of its weight after impact, giving the Vital-Shok effect. Traveling from the muzzle the projectile is similar to other ammunition you might have used but down range where it counts the Federal Barnes Triple-Shok X Bullet Vital- Mfg: Federal