Hugh...good points...I have found that the felt recoil differs widely between a double action revolver, vs. a single action...Ruger, Smith, Colt; the doubles handle recoil better for me. It's a push to the rear with the hump at the back of the frame widening the contact area in the web of the thumb and first finger.
I'm a pinkie under, Single Action shooter with a very firm grip and the roll back of a single action in recoil gets me on the inside of the thumb, (next to the trigger finger) with the back left edge of the frame. The Rugers especially seem almost sharp on that edge. I've used thicker than factory issue stocks to reduce that problem, but it's still there, especially with the magnums. The gun rocks back in recoil, the muzzle pointed skyward, and that web of the thumb takes a lickin'. Oddly enough, my knuckle does not as a rule, take a rap from the trigger guard. While it may be a stocking issue, I've yet to find a pair of wood stocks that stop the affect...BTW, I'm not interested in the Pachmeyer rubber types for aesthetic reasons.
With my normal day to day loads, ( of approx. the old Skelton load of 7.5 gr of Unique behind a 240 gr SWC in .44 Special ~950 fps), it's manageable over a full box of ammunition. For the magnums, at full bore, I just suck it up and take the pain...in reality, I only shoot the heavy stuff in preparation for deer season or to work up a load.
Just some thoughts...Rodfac (Thank you for your service...son #1 served on the "Alaska" SSBN, 7 patrols....)