Ammo Specifications Caliber: 22 WMR Bullet Type: #12 Shot Bullet Weight: 52 GR Quantity: 20 Rounds Pests can be hard-to-hit problems. CCI has designed options for the needs of shooters. Their shotshell options are excellent answers at short range, while the CB long s accuracy makes it an ideal choice when pests present themselves a bit farther out. What sets them apart from everyone else is CCI s industry exclusive in the Pest Control/Specialty line. Features and Benefits 52 grains of #12 shot at 1000 ft/sec Will not harm your gun barrel Any residue comes out with standard cleaning methods Clean-burning propellants keep actions cleaner Sure-fire CCI priming Reusable plastic box with dispenser lid Note: Not intended to cycle in semi-automatic firearms.