Extract maximum performance from your favorite cartridge with Federal Premium Trophy Copper. The loads provide pinpoint accuracy and aggressive expansion, while the copper polymer bullets retain up to 99 percent of their weight for deep penetration on a wide range of medium and big game. FeaturesCopper 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 drop