When I competed in PPC I used a modified pair of target grips as I could shape them to fit MY hand. Basically, they duplicated the feel of the magnas with a grip adapter. In the photo, top pair sports ivory magnas, bottom revolver has smooth stag. I like them both with grip adapters.
Regarding customizing other revolvers. Don’t i know it. I have a 28-2 and a 1917 I have customized. And I am looking for a couple more revolvers to modify into future custom projects.