We met J-P at the Southern a couple of years ago and had a good conversation with him. He supplied the record for my round action, and also gave me what information he had about my 28 bore boxlock. Between what he told me about the 28 and the information that Jack Rowe knew of it (because of his knowledge of the maker of the gun for Dickson), I have a pretty good record of both guns. As already posted, it's really nice to have some sense of the history of your gun, one that you can add to with your own use.
(Ken, BTW, I'm not sure if Charles Gordon is a distant relative, but the Duke of Gordon is. Nice to keep the dogs in the family
)