In Allan Eckert's Dark and Bloody River: Chronicles of the Ohio River Valley, Chapter 6 (October 12, 1781) Kenton and Wetzel apparently joined together for a hunt. It was mentioned that Martin Wetzel had a recently acquired a new double-barreled rifle that Kenton was "impressed" with. Does anyone know of such a rifle? If true, would have it most likely been a swivel breech?