Have long wanted a long rifle, and particularly a flintlock one. I didn't get one for a long time because I thought they would be fiddly and unreliable and too much new stuff to learn, but finally I decided to just jump in.
Not long ago I ordered a new Pedersoli Kentucky flintlock in .50 cal. I had hung back from getting one of these Pedersoli's because I felt that the stock shape was not "right", it had an odd hump to the butt stock, but after some reflection I thought I might be able to fix that.
So I got the rifle and the first thing I did was reshape the comb of the buttstock, and make it look more like what it should, a version of a roman nose style gun is what I think they were aiming for. To my eyes it now looks a great deal better.

About this time I started worrying that maybe I should have shot the rifle first before starting in on all these decorative aspects. What if the thing doesn't shoot? So off to the range I went with all manor of paraphenalia and accoutrements. My first range session I managed to dryball the gun, so that was a useful learning experience. Then, you won't believe it, I did it again. So I don't learn much it turns out - this time I had dry balled it - and I discovered I had run out of powder as well and couldnt shoot it out. So I suppose Flintlocks can be fiddly. Very fiddly picking powder through that vent.
Then I started ruining flints and sharpening them badly and going through them like chocolates...till I figured out to change the angle they are held in the jaws, so they scrape down instead of just ramming them into the frizzon...
I was getting flashes in the pan more than I liked, so I drilled the touchhole out to 1/16th of an inch, which is something I read on the interweb, and that seemed to fix things right up.
Despite all this fuss I managed to shoot two consecutive three shot groups at 55 yards. This is shooting with a six oclock old - I filed the sights up a bit to get the point of impact right where I was aiming and then shot these groups, with 80 grains of 3F and a .490 round ball. Patching was from a cotton shirt, about .010 thick:

This is my deer load. Next thing is to go back and figure out a rabbit / small game load, I am thinking of around 40 grains of powder, and hopefully it will shoot to point of aim at 25 yards, that would do.