I recently picked up a NOS 7\8 straight full octagon 42" barrel that is unmarked but was told came from Numrich Arms. The barrel is a 45 caliber with very shallow slow twist grooves. Thinking about using it for a southern flintlock rifle build but would appreciate anyone who has ever shot a rifle with such a barrel and how it performed? Also, what loading recommendations for shallow groove rifling?
Many thanks in advance! Joel
Many thanks in advance! Joel