Thanks bigsmoke for your reply! I have my lyman trade rifle in 50 cal. since 2001 and have had issues with the rifling cutting my patches. I have tried every combination in the book including lapping the barrel, patch thicknesses and so on, but to no avail. The $350 price from Oregon seems a little steep, considering Rice barrels are around $275. I use 80 grains FFG, cotton wad, .018 patch, .490 round ball. I live near Dixon Muzzleloading in Pa. and they are a terrific place to deal with. I am considering either buying a muzzleloader already made, an Oregon barrel replacement, or getting a Jim Chambers York kit.