Check the American Custom Gunsmith Guild, they have a website and list gunsmiths by their specialty. To become a member of the guild the gunsmith must submit an example of is work. All the members are tops in their chosen specialty. Most of the 'smiths that I have used have retired, our own Jim Kobe is a very competent 'smith that I've used mostly for recoil pads. Jim's work is top notch, charges are reasonable as is his turnaround time. Well known pistolsmith Hamilton Bowen has done a caliber conversion on a Smith & Wesson revolver for me. He also accepts small jobs, recently I sent a S & W cylinder for his shop to add a "black powder chamfer", charge and turnaround time were very reasonable.
