I'll give you a little background on the WMC. I was looking for a pistol, that would meet Virginia's legal limits for hunting with a black powder pistol. It must be at least .50 ca. single shot, loaded from the muzzle, with at least 50 grains of black powder or equivalent. Not many fall into that category. Most pistol barrels have a twist from 1 in 18 to 1 in 25. When I saw the WMC in a pawn shot, the butt stock was messed up, where someone had a plaque or something on it, and then took it off. I was going to cut the barrel and put it in a pistol stock, but the I got this idea, so I don't know if I'll change it or not. It shoots great, and I kinda like it.
Someone called it a running buffalo gun. Or could be Canoe gun, or even Blanket gun.
I have killed several deer with the 1 in 20 WMC, back in the 80's. I used the Maxi-Ball. I split the stock on one. They were know to have stock problems, but later one's have the tang screw running all the way into the trigger plate.