A little recoil actually helps time the gun and keeps it predictable. Going too light negates this.
I read something a couple years ago that had him using Bullseye with a 230 grain FMJ at low 170's PF. Bullseye, Clays, N310, 700X, Red Dot, and probably a couple others make really nice 45 loads. I load and shoot Clays myself, I can't find anything better.
FF, no coils in the mainspring on a S&W revolver. He also uses pretty strong rebound slide springs otherwise he outruns the trigger reset. I'd bet you a dollar and a donut the DA pull on his competition guns will light CCI magnum primers without fail......