I used to use Chad McCauslin but I brought him some guns from friends in Bedford County - I can't believe their nearest gunsmith, according to gun shop out there, is in West Virginia. Anyway, it took over a year to get all of them back and one had not yet been repaired. Chad did some excellent work for me but when a coworker told me about the shop where he works part-time, I gave it a shot.
Mike at HD Precision Gunsmithing, 430 Pinedale Road, Carlisle, Pennsylvania 17015 does excellent work. Like all good gunsmiths, he is busy but it is normal for him to quote three months for completion and have it ready in two. He has done work for me and several people whom I have referred to him with zero complaints. His telephone number is 717-462-6413 - he's closed on Mondays.
Ed