Larry Turnbull, Cylinder and Slide come to mind as to GOOD..reasonable is a matter of opinions.
I tune my Rugers by shooting them, including dry-firing however must confess I am a peasant as to such things.
Might get a copy of the Cowboy Chronicle. the SASS newspaper, a lot of well known Cowboy Action 'smiths advertise..recall Jerry Miculek does SA, and maybe DA, revolver tuning.
Have fun with your Ruger.