Mr. Nash , the differences in the Continental and British pinfires are interesting. I have often wondered about the choices of gauges. Most Continental, mainly French, Belgian, and German, pinfire shotguns are 16 gauges. I have not paid strict attention to the British gauges, but I cannot recall seeing a British pinfire in 16 gauge. I'm sure there must be some , but rare. We do see British 8, 10, 12, and others.