Oh boy. No life after cowboy. RCM is correct in that we do not approach shooting a single action revolver except in a very fast manner. The "traditional class" shooting grip is comparable to the combat grip. With the pinky under the grip. Really we use the pinky to assist us in grabbing the revolver the same way every time. It takes a smidgeon of recoil away.
We run light lead bullets from about 750 to 1000 fps. Thats the 38s. The 45 shooters will push a lead cast weighing 160 to 250 gr. Fps will range from about 650 to 850. Some of 'em go faster.
I shoot, between cowboy matches
, a Smith M29 6 1/2"nickel 44 Mag. And I often shoot a Ruger Blackhawk 7 1/2" 3 screw in 44 Mag. I use the big Blackhawk in side matches. Long Range Pistol. I generally load up a 240 gr lead cast w/gas checks (legal) to about 1100fps. No, I am still going to use gas checks.
When you are attempting long shots offhand with a pistol you cannot strangle the firearm and expect to shoot accurately. The Blackhawk has a crisp 2# trigger that I let suprise me and I allow the plow handle to rotate freely. I can put six in a six inch circle at 100 yards.
Normally those (yours) triggers need to be tweaked. I would gues 5-6#s and a little creep. Be aware there are a handful of cowboy shooters who have not had anyone work on their firearms. My old 3 screw Blackhawks have 1.5#s triggers as do my Winchester replica 1873s.
Load a midline round, take a comfortable two hand hold shootingstance, line 'em up and start th squeeze. The trigger. Hold the pistol snug enough not move. Leave the pinky off the bottom. Let 'er roll up and back. Whether you strangle or cradle, if you do the same thing every time, the results will be the same everytime
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BTW, you can take one load, say a kinda hot 158 gr 38 and shoot it in a gun like yours or, say a Smith M19. Guess which feels softer.