Thanks for the info everyone. I really appreciate it.
Rifles in the early years: Current re-enactor mantra is that everyone had a smoothbore. To some extent this is true. But it had little to do with effectiveness or utility.
There is the 1680s letter from the Gov of NY to the Gov of PA in which he states that almost 10% of his force (500 foot and 50 riflemen) was rifle armed. Where did they come from? Probably from Europe.
While is currently the in thing to discount the rifle as to numbers and availability in earlier times. The documentation does not agree. Its pretty obvious the rifle was common by the 1740s. There were issue rifles with Braddock (who may have been sniped by an native with a rifle for all I know) and in New York during the F&I War. The PA area Natives (Shawnee, Delaware and others) were heavily involved with rifles by the 1740s this begs the question of how they learned of the rifle. Somebody had to be using them for the natives to take notice and realize they wanted one.
But it gets all the re-enactor smooth bore advocate guy's back up when things like this are pointed out.
Lenk's "The Flintlock" has a number of "guns" from the 1600s with very rifle like rear sights and one on plate 31-3 that is pretty obviously a rifle from a relatively heavy octagonal barrel to the patchbox with a wooden cover. Stated to be mid-17th century. This firearm could easily be similar the those carried by the 50 riflemen mentioned by the Gov of NY.
The book is pretty useless but might be available through interlibrary loan at little or no cost. It is mostly dedicated to the study of the locks and decoration and its rare to see a plain arm as in plate 31-3
Yes, the smoothbore was more common. Everyone had to have a long gun for Militia and many chose the cheapest thing that would meet the need, and muskets were cheap as were low end fowlers and such. But there have always been guns owners (typical eastern Militia member if you will), shooters and riflemen. At least since the spiral grooved barrel was invented.
So if you want a rifle do some research and have one made or find one that meet the criteria. It will be simpler to have something made representing 1740, use a European arm as a pattern. Like a 1720-1750 German rifle.
Dan