I have a very unusual rifle (Indonesian M1954 in .303 British) in my collection but have found the muzzle is apparently shot out (doesn't pass the so-called bullet test, for example, and not because it's already counterbored). The rifling otherwise seems in ok condition. Since counterboring was a common practice that some militaries relied on to remedy shot-out muzzles, I was wondering if there are any gunsmiths that do that kind of work.