Harry Leonard built my Jeffery 12 bore double. An extraordinarily dependable weapon, it's my main choice when going after birds in any and all forms of terra firma. It's been thrown to the side, out front, wherever whenever I knew I was heading for the ground with my boot caught in a root or whatever. It always survived, sometimes a lot better than I have.
And yes, he and I believe his son Daniel built some Jeffery double rifles as well. Cal Pappas' book THE BRITISH BORE RIFLE has 3 or 4 nice examples to admire.
