Federal Premium TROPHY COPPER .223 55 Grain Trophy Copper Centerfire Rifle Ammo 20 Rounds. The projectile provides flat trajectories and tremendous downrange performance on everything from antelope to moose.Features:Copper-alloy 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 superb accuracy across a wide range of firearms Polymer tip and boat-tail design increase the ballistic coefficient for high downrange velocity and energy with minimal bullet drop Specifications for Federal Premium TROPHY COPPER .223 55 Grain Trophy Copper Centerfire Rifle Ammunition: Manufacturer: Federal Caliber: .223 Remington Number of Rounds: 20 Bullet Type: Spitzer Boat Tail (SBT) Bullet Weight: 55 grain Cartridge Case Material: Nickel Plated Brass Muzzle Velocity: 3240 ft/s Muzzle Energy: 1282 ft-lbs Application: Medium Game Package Type: Box Primer Style: Centerfire G1 Ballistic Coefficient: 0.305 Lead Free: No Features of Federal Premium Vital-Shok .223 Remington 55gr. Trophy Copper Rifle Ammo - 20 Rounds Official ammunition 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 Package Contents: Federal Premium TROPHY COPPER .223 55 Grain Trophy Copper Centerfire Rifle Ammunition What is Federal Premium TROPHY COPPER .223 55 Grain Trophy Copper Centerfire Rifle Ammunition good for? The manufacturer suggests that it is suitable for medium game.Federal P223TC1: Premium TROPHY COPPER .223 55 Grain Trophy Copper Centerfire Rifle Ammo 20 Rounds