.22CB's. Any gun store would have them.The pellet gun is one of those high powerd ones. I have shot metal signs with it at about 40 yards and they went right threw. I can't use a 22 in the area that it has to be done (residentail) .
But I did use the bolt action only (Calibrees ??)) no powder 22 rounds before. I have no idea where I can buy them at now a days. Any info on them would be great.