Okay, as a newby in muzzle loaders, I am going to throw my two cents worth in (notice I didn't say two bits, because I'm not that experienced yet).
I just bought the Traditions Kentucky Percussion pistol, 50 caliber, and am in the midst of putting it together (my first kit). I am to the point of stock finishing and browning the barrel (it came as white metal). Here is what I have run into with this kit:
1. In general, the bolts are longer than what is needed to be able to put it together (maybe this is standard with kits). Watch that; as I put the tang bolt down from the top and into the trigger/trigger guard, the length forced the guard down and broke off its cast brass end. You have to grind the bolt off to the right length. I had to quickly learn brazing brass to repair the trigger guard.
2. One lock plate bolt that goes through from the side to hold the lock plate was too long and forced its length into the back of the hammer. It took me awhile to figure why the hammer wouldn't cock. You have to grind the bolt off.
3. The brass nose cap has two screws that go into the underside of the barrel. When I put it on, it left the nose cap about 1/8" away from the front end of the stock. I could have cut wood away from the stock in the area of the tang, where the barrel seated against the stock, but decided that it fit so well in that area that I would live with the front-end gap.
4. The ramrod is somewhat bent. That probably isn't a problem, but I think I might change it with all the talk about ramrods breaking and putting splinters through fingers.
5. Other than that, there is some trimming back on stock wood in some places, but not a lot (getting the trigger guard into its slot, getting the lock plate to fit its slot, things like that).
Other than that, the kit worked pretty well to this point. I don't know what a person should expect with the kits, but this didn't seem too bad.
:grin: