any of the Great smiths can do the work. some are best at certain action Gene Smith/ 40X be he still works on others. look at the ARA National equipment list and pick one. you wont likely go wrong.
What would scare them, Karl Kenyon or the threaded action? If it's the latter, I think most are done that way anyway. Just out of curiosity, that gun didn't happen to come with a letter from Dieter Anschutz and some guy shooting back in college did it? I've only seen on Kenyon smithed Anschutz and just wondering where it finally got to.