You would have to have whomever you are gonna have do it mic it to see. I would suggest talking to one of the companies that do this. I would use Stu Wright and have him thread it for his chokes that pattern among the best if not the best(link above). I also know Carlsons can do it as well. They have done a couple guns for a friend of mine. If the barrel thickness' can support the threading they can thread it for any chokes you want.