The American Eagle Suppressor 22LR ammo features a 45 Grain Copper Plated Lead Round Nose bullet and clean burning powders to keep suppressed firearms clean for longer while still maintaining subsonic velocities. The Federal Suppressor 22LR ammo offers a muzzle velocity of 970 feet per second and muzzle energy of 94 ft. lbs. This 22LR ammo is rated as a subsonic 22LR ammo round. American Eagle Suppressor 22 Long Rifle ammo is new production non corrosive ammo with brass casing and a copper plated solid bullet. It is meant for training or hunting in areas where noise is a concern. Subsonic loads are intended to reduce sound signatures while shooting through suppressors, making the shot even quieter. There is no supersonic crack with subsonic rounds. Federal American Eagle Suppressor 22 Long Rifle fires seamlessly in both suppressed and non-suppressed firearms. Suppressor 22 Long Rifle ammo may also be fired in a standard 22 Long Rifle firearm and will not produce the noise of standard rounds.