I have a 1971 made Winchester Musket in .30-30 that I plan on putting a 28" Douglas Barrel chambered in .38-55 on. What bore would you use, a .375" or a .377" diameter ? What would be the best twest, 12 or 14, shooting a 265 gr bullet.I want to keep the .30-30 barrel.
I know JES does good work. There are not a lot of the muskets so I want to be able to restore and I also want a 28" barrel.