It seems as a practical matter if a mountain man were to have a second long gun it would would be a smoothbore for its' verstility.
Indeed a good question! And one to start you thinking. My best guess is the smoothbore just might be the ONLY rifle he "carried". I'm sure there is a whole bunch we don't know about these colorful folks, and another whole bunch of speculation that we accept as truths.
I, personally, don't think "the average Mountain Man" would have owned, or carried more than one, and that would have been a smoothbore.
Then again, I have to ask if there was ever such a thing as an average Mountain Man? It was certainly not the pictures we see of someone all decked out in leathers, skins, knives, and powder horns hanging off 'em.
That "second gun" would have made for some powerful trading, and that was another form of survival.
Perhaps some of the more "better read" will weigh in on this, and set the record straight.
I don't think the question had anything to do with this, but rather flint & percussion. I feel it would have been flint due to the uncertainty of "caps" in their early stages.
I also think that powder, of that time frame, was much
[url] better...in[/url] all grades...than the powder we use today, I'm not sure that if the grinding of powder was not a more common practice than we think of it today.
Russ