Velocities of Federal Premium HammerDown loads are customized to produce superior ballistics and terminal performance through lever-action barrel lengths. The construction of the molecularly bonded soft point bullets has also been adjusted for the best accuracy and expansion at those velocities. The geometry of each round's case, bullet and cartridge ensures flawless cycling through tubular magazine and typical lever-action feeding systems. Series HammerDown Caliber 327 Federal Mag Application Hunting Bullet Type Bonded Hollow Point Bullet Weight 127 gr Muzzle Energy 768 ft lbs Boxes Per Case 10 Rounds Per Box 20 Casing Material Nickel-Plated Muzzle Velocity 1650 fps Unit Of Measure box