The Nosler Partition was the first bullet loaded in the Federal Premium line, and it continues to be a standard for consistency and reliability. Its partitioned lead core allows the front half of the bullet to mushroom on impact, but keeps the back half intact for deep penetration. Product Features World-renowned bullet features a partitioned lead core Front half mushrooms, producing rapid expansion and energy release Back half remains intact, ensuring deep penetration through weight retention Perfect for all big game at close to mid-ranges A portion of the proceeds of each sale of this product go directly to the conservation effort of Rocky Mountain Elk Foundation (RMEF) Product Specifications Caliber: 300 Winchester Short Magnum Bullet Weight: 180 Grain Bullet Type: Nosler Partition Muzzle Velocity: 2980 fps Muzzle Energy: 3549 ft/lbs Casing: Brass Quantity: 20 Rounds per Box