well I stumbled into one today at quite an attractive price...I had to buy it. Jones under lever, single barrel, single set trigger, swamped barrel, weighs 6 & 3/4 lbs. No makers name, but very nicely made. I have yet to do a chamber cast but at this point am assuming it is 2 & 1/2" chamber. The bore measures .674" and is pretty good with the twist around 1 in 54". I think it will shoot either ball or a light conical. Any thoughts as to powder charge? I am think around 3 drams to start. Thanks for your input, pictures as soon as I can find my USB cord.
Steve