I seem to remember reading that it is impossible to hit anything firing double action. Maybe not true?
I think MrBorland's targets handily put that to rest (and do they!). Most of Ed McGivern's incredible feats were done in double action.
Once I got the hang of double action, I never bothered with single action, and I'm actually more consistent. I think it comes from the fact that I don't have to shift my grip between shots.
MrBorland: your thumb placement is unusual for a wheelgun. Does the cylinder latch ever catch your strong thumb under recoil?
Oh, and full-lug Smiths? That's a fad.