One of the muzzle loaders that I have had the most fun with and one that was probably used more than we realize by the forefathers was the fowler, smooth rifle, or muskets. The local Anishinabe (Ojibwe) traded 20 beaver pelts for the 24 ga (58 cal) Northwest Trade Gun. I know of few people that lived off the land more than the Native American who seemed to like these weapons. Many of the original found such as one pulled out of the Rainy River, have been found loaded with shot. The shot of the time was commonly swan shot, which was about BB sized and made by pouring lead through a screen or a hole and letting it fall into water. If you think on it BB shot will work for about anything from ducks to deer (if you head shoot the deer up close). No one wasted ammo wing shooting when you could let ducks or geese group up and get more than one with one shot.
I have made several flintlock smoothbores, some out of old modern barrels picked up here and there. My last one was a nice one in 12 gauge with a cherry wood stock that I sold in a moment of weakness and haven't replaced. I even had a Brown Bess once. I went to BP shoot and blasted a couple of gongs with a .715 round ball loaded with about 100 grains of 2f with the Bess. The other people were making them swing with the rifles. Some using 50 maxis. The first gong wrapped around the cross piece three times (they were homemade welded on chains) The second pulled out of the ground and layed flat. I quit shooting them due to the lack of appreciation from those hosting the shoot. Competition required that one did use rear sights as the originals were not made with sights. A ridiculous rule as rudimentary sights were commonly found added on many originals. The Allen Town Bethlehem long rifles were found to be smooth rifles, some with double set triggers. I read an article about an ivory hunter that used a ten gauge smooth rifle. These were guns built like rifles with no rifling. The ivory hunter claimed that the smooth bore was easier to clean and plenty adequate for accuracy. I have found in my smooth bores that loading a card wad under the patched ball seems to increase the "punch" and accuracy. You can wing shoot with these flintlocks, but I never felt a lot of guilt swating with them, or saturating a tree top to get a grey squirrel hidden in the leaves. A 20 gauge or larger also works well for deer. Just thtought I would mention them as I haven't seen much written about them on this thread and they are alot of fun.
Northmn