I too was into PPC shooting on the PD's shooting team in the 70s and 80s. I generally shot into the 1480s and was a state champion and Governor's 10 shooter a couple of times back in the day. As noted above, PPC is a DA game for the most part, even at the 50 yard line. As a result, I rarely shoot a revolver any other way, even when shooting at extended ranges.

For good success with DA shooting, a good two handed grip helps and I also like my S&W revolvers to stack just a bit as the cylinder locks into place. With that tactile notice, I then have virtually a SA let off for the shot.

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Keep your powder dry.