CCI has been a leading innovator of rimfire ammunition for over 50 years, producing specialized loads to meet the demands of serious hunters and shooters. CCI Shotshell Rimfire Ammo shoots a pattern of fine birdshot pellets for short-range pest control. Pellets are contained in a plastic capsule that does not harm gun barrels. Producing minimal noise and muzzle blast at sub-sonic velocities, and having virtually no risk of over penetration, makes CCI Shotshell Rimfire Ammo an ideal choice for getting rid of vermin close to human habitation.