American Eagle Rimfire Suppressor rounds perform to their ballistic peak in suppressed firearms, thanks to carefully selected propellants, bullet weights and primers. Their sub-sonic loading eliminates the super-sonic “crack” suppressors can't silence. In addition, special clean-burning powders minimize fouling while reliably functioning in semi-automatic firearms. Suppressor loads are priced for volume shooting. Specifications for Federal Premium American Eagle Rimfire Suppressor .22 Long Rifle 45 Grain Copper Plated Round Nose Rimfire Ammunition: Manufacturer: Federal Caliber: .22 Long Rifle Number of Rounds: 50 Bullet Type: Copper Plated Round Nose (CPRN) Bullet Weight: 45 grain Cartridge Case Material: Brass Muzzle Velocity: 970 ft/s Application: Target Package Type: Box Primer Style: Rimfire Features of Federal Premium American Eagle .22 Long Rifle 45gr. CPRN Rimfire Ammo - 50 Rounds Bullet weights and profiles carefully selected for suppressed firearms Clean burning powders for easier cleanup Subsonic muzzle velocities Reliable function, feeding and ignition Federal brass cases Package Contents: Federal Premium American Eagle Rimfire Suppressor .22 Long Rifle 45 grain Copper Plated Round Nose Rimfire Ammunition What is Federal Premium American Eagle Rimfire Suppressor .22 Long Rifle 45 Grain Copper Plated Round Nose Rimfire Ammunition good for? The manufacturer suggests that it is suitable for target.