This is .460 S&W Mag Winchester Supreme Elite 260gr. Dual Bond Hollow Point Ammo. Revolutionary "bullet within a bullet" delivers an unprecedented 12 segment design with two times the expansion for maximizing stopping power. Massive hollow point cavity provides lethal stopping performance at a variety of ranges and impact velocities. Proprietary bonding process welds lead and inner bullet jacket together improving retained weight and penetration for quick kills. Heavy outer jacket mechanically bonded to the inner bullet, protecting it during penetration through thick hide and heavy bone, and ensuring maximum retained weight and penetration. This ammo comes packed in 20rd. boxes.