To those new to building muzzleloading rifles and smoothbores:
The "kits" offered by Chambers, Track of the Wolf, Pecatonica River, Muzzleloader Builders' Supply and a host of others are not "fall together" kits.
They consist of a semi-finished stock with a lot of extra wood left on it and a number of semi-finished and rough cast parts which require a great deal of work to assemble and finish.
One can easily spend well over 150 hours building one of these "kits" and that assumes that they know how to measure, drill, tap threads, file and finish the steel and wooden parts.
Don't get me wrong. Building rifles and smooth bores from these kits can be a very satisfying accomplishment. One that will live with you for the rest of your life.
On the other hand, if one is not somewhat skilled and willing to put forth the effort to learn new tasks they may end up turning their "kit" into a pile of junk that is not only worth little but may not even work.
These "kits" are better thought of as a "box of rough parts".
The Kits sold by Thompson Center, Pedersoli, Traditions and a few others are basically production line guns which are not totally finished.
The holes are drilled and threaded and the mortices are almost finished to the point that the mating steel parts will fit.
Building one of these can take from 15 to 40 hours depending on how good you want the final gun to look.
With any of these kits, it is suggested that you spend some time reading the posts in the Gun Builders Bench Forum on our site.
A lot of good information about the problems folks have run into and how to fix them is given there.