About 20 years ago I was a teenager trying to get more days afield so I began flintlock hunting like you want to do. Back then they took your doe application from you for the general season because an unused buck tag is good for doe as well and still is to this day. Only the roundball was legal as well.
I began with a T/C Renegade .50 caliber and for years could never get reliable groups with it, patch ball or 370gr T/C maxis. So I sold it off very cheap for someone else to deal with.
Next I bought a Traditions Springfield Hawken .50 cal 10 years ago, it had a slow 1:66 twist just for the roundball. This flintlock was only $119 at the time and ya get what ya pays for. It was worse than a T/C. It has the shallowest rifling I've ever seen in a muzzleloader. It throws a ball in all different directions no matter what thickness patch or weight powders are used.I still have it hoping one day to find a better after market barrel.
Now for the last few years I use the Cabela's Hawken. It's one beautiful piece, very similiar to a T/C. Walnut stock and finely finished, I really like it's buckhorn sights with front bead sight. Made in Italy by Investarms, the same maker of Lyman's flinlock rifles at just $229. The first few shots with it straight outta the box was all the difference. It is how a rifle should shoot, groups just like a centerfire rifle, time and time again. This Hawken has the deepest barrel grooves of the others (.010"

and I feel this is what makes it more accurate and can take more fouling. The deeper rifling seems to grab the patched ball or maxi that much better.
This rifle really shines when the 320gr .50cal REAL maxi's are used, (these can only be molded and not bought anywhere). I hit a doe with one last year and they have instant knockdown power with it's wadcutter shape.
It gives confidence taking it into the woods. It is the last flintlock I will ever have to buy, after making two mistakes in the past. I hope you learn from my experience with off the shelf flintlocks.
Looks like snow this Christmas eve, guess where I'll be with my Hawken these next couple of weeks :-)