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Choosing a traditional muzzleloader is clearly a personal thing.
If I had to have only one, it'd be a full stock, long barrel 20ga flintlock smoothbore for personal reasons in that it will load ball or shot to varying degrees, is well suited to hunting squirrels and fowl as it is hog and moose, is typically lighter in mass weight and thus easier carrying afield than a rifle of comparable size, is aesthetically the most common long arm of the 1700's and the prerequisite firearm for warfare (for the most part, rifles were not allowed in 18th century general armies and militia as their rate of fire is inferior to a smoothbore - firepower was more important than accuracy).
The one concern that might crop up with a smoothbore is accuracy, particularly past 25 or 35 yards. *IF* need be, that can be helped by adding a rear sight, and thus turning a smoothbore into a "smooth rifle", which was also a popular 18th century firearm. Be aware that some club and organization shooting matches will not allow rear sights on smoothbores, if that matters.
A turkey choke bbl will be the better way to go for turkey hunting, but would probably turn that smoothie into a one trick pony. I've never had a turkey choke smoothie bbl, so I can't comment on how well or not it would take to loading with patched ball or naked ball. In any event, not for me as loading patched balls is about 90% of how I use a smoothbore. I doubt that a straight cylinder bore bbl is that much of a handicap for fowl hunting, didn't seem to be an issue for farmers of that bygone era.
The good part about all muzzleloaders is that you get to create each "cartridge", and therein one can experiment with different loads to find what the gun likes best in terms of different ball diameters, patching, lubes, shot size and volume, black powder granularity and charge volume.

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