Share some info on your 8 bore, I've alway had an interest in building one.
well tmitch, i will tell you everything about mine,but I'M not the one building it, a blackpowder expert builder is. found my builder on the traditional muzzleloading forum,and i can set you up with him if you like.
but now ill tell you about mine,to my specifications and his.
a 30" tapered octagon barrel of modern rifle steel,nitro proofed,blk powder load 400 grains, either 1:40 twist or 1:144, i chose 1:40 for big conicals. Bastogne walnut,half stock,musket cap ignition,heavy hammer,two leaf express sight for 50/100 yards,i chose rust brown finish on the steel,oil rub on the wood. heavy duty lug for recoil.Leather recoil pad.
Its not done yet,still be several more months. I think you build it like any muzzleloader except with heavier duty design.
Hope it gave you an idea.