Rocky is still at Yellowstone Gateway Sports. Payne's Gunsmithing builds some competitor's rifles but don't ask him to install a muzzle brake
! You'll get an hour long lecture as to why he does not like them.
As far as a precision gunsmith, the closest one is Columbia Falls. Underground Skunkworks. Mike and Matt over there are a couple of the best in the state.
You can see one of the guns he worked on at the link in my signature.