The Pedersoli, while a nice shooting gun (mine in .36cal was deadly) isn't a representation of any actual period. More a mishmash of features.
Personally, from my research in my mountain man days, I'd stick with the VA rifle.
Hanson wrote about the Hawkens, etc and IIRC, his view was that the most common long gun for the MM was an eastern rifle (late Lancaster or Southern Mountain) or a trade rifle.
Mario