Brux 45 Caliber #17 Barrel Blank
This is the #1 contour I use in the making of a long range, super powerful smokeless muzzle loader. This barrel blank is 31 inches and can be finished up to 30 inch. I prefer to cut off at least one inch from the muzzle end to get good clean, sharp lands and grooves.
90% of my builds are finished at 26 inches as this is all that is needed when shooting smokeless powders. If you are going to shoot blackhorn 209 or black powder substitutes, you might want to finish your barrel at 28 inches.