Turning a .308" barrel into a .338" barrel.
Is it possible? Can a barrel maker punch a 308 barrel out to a 338 barrel?
Would it save time vs ordering a new one? Whould it cost just as much?
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.