Ok 45MAN,
My 500 S&W has been bead-blasted by Cylinder and Slide. They set the barrel back for a .005 cylinder gap. Also did an action job and installed a fixed overtravel stop on back of the trigger. Bowen Classic Arms blackpowder chamfered the front of the cylinder and beveled the charging holes. Also, I installed a Bowen Classic Arms lanyard ring and lanyard system. Jack Huntington installed a McGivern big-dot gold front sight I purchased from Brownells installed. And I bought a Bowen Classic Arms Target steel rear adjustable sight for it.