CCI has been loading rimfire ammunition since 1962 and is known in the shooting sports as a one of the leaders in rimfire ammunition. CCI has made a reputation for delivering reliable ammunition that delivers exceptional performance time after time. This 30 grain Maxi-Mag load is a hard-hitting hollow point load that combines controlled expansion with superior accuracy making it a great round for exploding everything from aluminum cans to those pesky varmints. This ammunition is new production and non-corrosive. Technical Information:Caliber: 22 Winchester Magnum Rimfire (WMR)Bullet Weight: 30 GrainsBullet Style: Jacketed Hollow PointBallistics Information: Muzzle Velocity: 2200 fpsMuzzle Energy: 322 ft. lbs.