I have thought that we may also be a bit mistaken about the availability of riflemen in general. Daniel Morgan used riflemen very successfully in Saratoga but they did get taught a lesson when they pursued a unit of British troops they had shot up. They were led into a unit of grenediers. Francis Marion was said to use them very effectively in gurellia warfare tactics.
When inducted into the army, a soldier was given a uniform and a musket. Most were young men as today and showed up unarmed. Old Hickory ran into this in the war of 1812 where young southren men showed up anarmed. they ran into trouble at Brandywine I believe because the French muskets were issued with ammunition that did not always fit. Rifles were expensive and may have belonged to an individual that was already established in life. These individuals did not show up in great numbers to serve. Daniel Morgan recruited 500 riflemen from several colonies. Also just because someone owned a rifle does not mean he could shoot it that well. When I used to help run our Rondys I used the 2 foot square rapid fire pistol targets so that some could at least shoot a satisfying score. There were a few good shots but many more that had trouble with the 2 foot target. Even off of x sticks, some were not all that good. Morgan knew this and called Timothy Murphy to shoot Fraser at Saratoga when Fraser was rallying the british troops. The German troops armed with rifles did not equalize the field as our riflemen outdistanced them.
When the British organized the 95th regiment and armed them with rifles they used them to their best as a special forces unit. They sniped Napoleons officers and other important targets and were always backed by regulars with muskets and bayonets. They only recruited those that could shoot them, but note that they were an issue arm.
Like many things in Colonial America there are assumptions to be made. But there is some stuff written down.
Rifles are reported in use by militia by the 1680s in NY.
Rifles were far more common in native hands than many want to admit by the 1740s.
In 1743 Conrad Weiser reported meeting " twenty Shawanese each with a rifle, two pistols and a sabre". The Deleware were also rifle armed by this time.
John Bartram 4 February 1756; "...they commonly now shoot with rifles with which they will at a great distance from behind a tree...take such sure aim as seldom misseth their mark."
Edward Shippen wrote in April 1756; "The indians make use of rifled guns for the most part..."
Dewitt Bailey further writes in discussion of the Pennsylvania Indian Stores at Shamokin and Ft Augusta "What is particularly interesting about these official Pennsylvania store records is than neither trade-gun nor fowling piece appears to have crossed the counters."
If you have a native shooting from behind a tree 150 yards out how do you effectively deal with him with a musket and bayonet? With a 150 yard start you will never catch him and unless you can cover 150 yards before he reloads getting closer to him would be a bad idea.
Shippen further indicates that rifles of the 1750s were effective to 150 yards.
The above quotes in Chapter 6 of Bailey's "British Military Flintlock Rifles 1740-1840"
Muskets of the day were considered too inaccurate to hit a man with any certainty much past 50 yards. This from actual testing in the early 19th century (see "Firearms of the American West 1803-1865"). I assume that this was the reason for the US Army using far more "buck and ball" cartridges than "ball" IIRC the ratio is 2:1 or better.
Then we have to ask where the natives LEARNED of the rifle and its advantage in accuracy? Had to be from Colonists .
Then we have to ask...
If only the rich/established people had rifles why was it that the rifle companies seemed to come from the frontier where the poor tended to gravitate? They did not seem to recruit riflemen from Williamsburg or New York.
I don't think that the "rifle was too expensive and most people didn't know how to shoot" argument is valid.
Most people DON'T know how to shoot nor do they particularly care to learn. There have always been gun owners, shooters and serious riflemen. Based on people I have met a lot of folks even in the Kentucky rifle community fall into the first category and a minority in the last. Today there are Kentucky rifle types who shoot but don't use the bench for load development since they can't shoot well off the bench? What does this mean? Most of the rifle matches in Colonial America appear to have been rest matches. People who shoot but never shoot from the bench are not even sure if they have an accurate load or not.
I never shoot offhand for serious shots, hunting etc unless there is no other option or the rules require offhand.
There is an account of Breed's Hill from a British officer who felt that most of the officer and senior NCO casualties were from a man who stood on the rampart and shot officers for 15-20 minutes before some British unit fired a volley at him and got lucky. It was stated that he fired and men passed "muskets" up to him. But if the British were advancing then we must assume that he was firing before the British got within range since once within range he was put out of the fight. Shooting officers, apparently at beyond the effective range of a musket, sounds like rifles to me. I would assume he was the best shot and had no respect for enemies effectiveness. Or he thought it was the thing to do. On the ramparts may have given him the ability to shoot over the ranks at the officers and NCOs behind. All we really know is what was related so these are assumptions. But the evidence is pretty good.
The British complained bitterly about officers being "taken off" with a single rifle shot.
We have an account of 1790 on the Ohio where the man captured Charles Johnston states the natives that attacked them were all rifle armed.
Gotta run
Dan