This hunting bullet retains more mass, energy, and momentum after impact, driving this energy into the target. This ammunition is a new production, not corrosive, and comes in boxer-primed, reloadable brass cases. Product Specifications Caliber: 300 Winchester Magnum Bullet Weight: 180 Grain Bullet Type: InterLock Boat Tail Soft Point (BTSP) Muzzle Velocity: 2,950 fps Muzzle Energy: 3,478 ft-lbs Quantity: 20 Rounds per Box