Can anyone point me to a resource that could help me ID an old hunting rifle with a barrel dated 1919? Only other markings are "JBL" and the number 21 on the major components. Origin Eastern France. It is a single shot, smooth bore (maybe worn smooth, but I dont think so) hexagonal barrel and seems to take a rimmed cartridge. A 7.62 bullet rattles down the barrel so its a bigger caliber than that, suspect a pistol cartridge.