At 1050 feet per second and an energy rating of 98 ft. lbs. at the muzzle, the Subsonic is quieter than most high speed hollow points, and its special nose cavity is designed for high retained weights and classic mushrooming at subsonic velocities. It's great for varminting and works in any rimfire rifle or handgun that functions with CCI's standard velocity ammunition. This ammunition is new production and non-corrosive.