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. The Speer TNT Jacketed Hollow Point Bullet features a soft lead core and precision-drawn jacket that is fluted over 90% of its length. This design when coupled with CCI's ammunition production capabilities creates a round that will deliver rapid expansion and complete destruction when a target is impacted. This round is a great choice for the shooter looking for a round that will explode everything from varmints to tin cans. This ammunition is new production and non-corrosive. Technical InformationCaliber: 22 Winchester Magnum Rimfire (WMR)Bullet Weight: 30 GrainsBullet Style: Speer TNT Jacketed Hollow PointBallistics Information: Muzzle Velocity: 2200 fpsMuzzle Energy: 322 ft. lbs.