Deputy819
Well-Known Member
Got a question for a Gunsmith about whether or not it's possible to convert a 6mm Remington into a .243 Winchester without setting the barrel back. Considering that the 6mm Remy is a necked down .257 Roberts and a .243 is a necked down .308 can the chamber just be "cleaned up" with the .243 reamer or will there be "shoulder issues" requiring barrel set-back? Thanks a bunch!