Zachs21,
I'm sorry,I can't make out all the markings on your gun.However, it does seem to show a 5.5mm(5.3?),which does indicate some 22 caliber cartridge.The photo of the muzzle doesn't show that it was relined, so whatever it is, is likely the original cartridge.This photo seems to show the top rib comming loose.If this is true, you should have it repaired by someone experienced with this type work.A loose rib(if true)is a little disturbing because the gun seems to have been refinished.If the barrels were reblued using a hot caustic salts method, that might be the source of the problem. While one of the proofmarks that I can see, seems to be a German "View" proofmark, the form of the barrels, seems Belgian. Do you think you could take clearer photos of the marks under the barrels? you might have to set up additional lighting or reflectors. Maybe Raimey or someone else can do more with the photos than I.
Mike
