Federal Premium MeatEater 280 Ackley Improved 140gr Trophy Copper Rifle Ammo - 20 Rounds - Extract maximum performance from your favorite cartridge with Federal Premium Trophy Copper, the official rifle ammunition of MeatEater's Steven Rinella. The loads provide pinpoint accuracy and aggressive expansion, yet the copper, polymer-tipped bullet retains up to 99 percent of its weight for deep penetration on a wide range of medium and big game. Choice Of Meateater Copper Bullet Construction Provides Up To 99 Percent Weight Retention For The Deepest Penetration In An Expanding Bullet Tipped Bullet Cavity Is Optimized For Expansion Across A Broad Velocity Range Grooved Bullet Shank For Increased Accuracy Across A Wide Range Of Firearms Polymer Tip And Boat-tail Design Increase The Ballistic Coefficient For Higher Downrange Velocity, Energy And Less Bullet Drop