Revolutionary war restocks in the Hudson Bay style are not unknown. I have seen a nicely preserved musket, that is fitted with salvaged first model Brown Bess parts, but has the distinctive shape of a Hudson Bay fowler.
I recently purchased a very nice piece of maple stock wood from a forum member, that when it arrived, changed all my previous plans. The stock, had a lot of extra wood in the buttstock area, that just screamed Hudsons Bay/club butt/Buccaneer style. And, since I had a gigantic 1763 Charleville lock in my parts box, along with a round 42" 12 gauge barrel, it just seemed like it was meant to be. The vision I have, is of a Hudson Bay fowler that has been modified for military service.
I intend to back date the lock to represent a French lock made some time in the 1740's or 1750's, if I can find a goose neck hammer in the right throw. I may also crop the fore stock, to facilitate mounting a bayonet, that is, if my efforts at making a plug bayonet fail.
Hungry Horse