Thanks for the feedback. It seems the older I get the more fascinating these muzzle loaders are for me. I grew up back east, Rochester NY, and remember being not to interested in early American history. Now I find it so interesting. I wish, at times, I was back east where there is so much living history being acted out, gun builders and activities. I can't get enough of Muzzleloader magazine. I think it would be a hoot to build a gun from scratch in one of the workshops I see offered. I may have to take a short vacation to try one out. The Rockies here in Colorado are beautiful but I miss walking the hardwoods back where I grew up at times.
Welcome bitterbeer. Stay a while and look around, perhaps do a search. We've discussed every caliber from 17 to 80's or 90's and some cannons too, more than once. Most all recreational shooting is centered on the 45-50 class, but as they guys have noted if you're looking at kit options, and see now how the 50 will be heaviest of those given a particular outside dimension.
You might do yourself a favor and contact the kit seller and find out if there are other "non-standard" options. Sometimes there are. If these bbls are swamped, then don't fret it. But if they're straight bbls, you might do yourself a favor by paying more to get a swamped profile in whatever caliber you decide (if that is an option). There's much more to the handling of a longrifle than static weight.
Enjoy the learning.
My first match muzzle loader was a light 58 caliber,walnut half stock.
I made what passed for a lock and a single set trigger.The reason for 58
caliber was that Bill Large,a famous barrel maker 14 miles from here gave
it to me and said he didn't know it it was any good at all.It was a good
one and a friend used it to win matches in Ohio with it including a record
score of 50-4X offhand at 50 yards.This was in the Fall of 1958.
Enjoy the ride here on this forum,it will be a good one and there are NO
DUMB questions,only unasked ones.
Bob Roller
( Got my 1st muzzle loader from a pawn shop for $20 in 1951
)