Extract maximum performance from your favorite cartridge with Federal PremiumA(R) TrophyA(R) Copper. 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.Features:Copper bullet construction provides up to 99 percent weight retention for the deepest penetration in an expanding bulletTipped bullet cavity is optimized for expansion across a broad velocity rangeGrooved bullet shank for increased accuracy across a wide range of firearmsPolymer tip and boat-tail design increase the ballistic coefficient for higher downrange velocity, energy and less bullet dropSpecifications:Manufacturer: FederalCartridge: .308 WinchesterNumber of Rounds: 20Bullet Type: Spitzer Boat Tail (SBT)Bullet Weight: 150 grainCartridge Case Material: Nickel Plated BrassMuzzle Velocity: 2820 ft/sMuzzle Energy: 2648 ft-lbsApplication: Medium GamePackage Type: BoxPrimer Style: CenterfireG1 Ballistic Coefficient: 0.469Lead Free: No