Hi,
First, to get this discussion off on the right foot, your gun is not "Charleville" styled. The stock looks to be British influenced and in that respect, the barrel bands are a red herring. My initial impression is that it is an American militia musket from the late 18th or early 19th century. Your photos are not very clear but the butt stock is shaped like a British brown Bess, the butt plate appears to be from that style musket, the trigger guard and side plate look to be late 18th century Dutch. The barrel bands could also be Dutch or possibly locally made. I cannot tell from the photos if the lock has a pan bridle. It may be a cheap trade lock but I cannot be sure and lack of a pan bridle does not mean it is from earlier in the 18th century. Cheaper trade locks often had no pan or tumbler bridles right into the 19th century. My first impression is a carbine bore (65 cal) musket cobbled together from old parts to meet state militia requirements during the 1790s-early 1800s.
dave