I can tell you that Shaw barrels are not lapped BUT they heat treat them before they are button rifled. This gives them a much better interior finish. Are they as smooth as a lapped barrel? No, but they don't copper badly. I have a Shaw barrel on a Mauser Mini action in 223 Ackley. You would be had pressed to find a barrel that would keep up on that platform. If it's a hunting rifle, there shouldn't be an issue. My 223 A will shoot 3/4" groups at 300 yds. I call that close enough in a hunting rifle.Does anyone have personal experience with Shaw Custom rifle builds? Their prices seem too good to be true. They are an option that was mentioned to me recently. I’m preparing to start my first rifle and don’t want it to be a dissapointing experience. Thanks in advance.