I have an old model 12-A that is marked .22 short SN#654xxx. The bbl is stamped .22 short but an antique firearms dealer told me that if it was not a 12-B (it isn't), and the loading slot on the magazine tube wasn't just a triangle (it isn't either) then it would shoot any .22 except WCF and WMR. Does this sound right, I would love to shoot .22lr, but i don't want to hurt the gun. Any advise would be greatly appreciated.
Jeff
