RE: .22 shorts in a long rifle pistol barrel?
The shorts CAN be shot in a long rifle chamber but I'm not sure why you would want to.The long rifle is a superior cartridge overall.Heres the catch though,the mouth of the short case is set back in the chamber.Extensive use will erode the walls of the chamber and the next time a LR round is fired the case will expand to fill the gap around it.This will make extraction difficult if not impossible.As well,the tiny short bullet will have to jump the gap before engaging the rifling,thus accuracy may also suffer.