Yeah; that got me wondering if I should just leave the 22 Mag cylinder on it for convemience as long as it's still halfway accurate with 22 LR in the 22 Mag cylinder. I'm in the dark on this one, as I'll admit having no experience with 22 WMR's. Maybe to be on the safe side I'll just run 22 mag's in the 22 mag cylinder, as long as I've got 'em both. I thought the only physical difference was case length. Anything else I should know about 22 WMR's? I'm a real newbie on those.