Interesting post, and a nice old pistol... Too bad about that damp room too...
Jim, you wrote: "With the type of lock work in that gun - the cylinder lock is only fully engaged when the hammer is at 'full cock'. At that point there should be very little 'wiggle' from side to side."
That 'wiggle' bothered me when I looked at my first H&R (an old Auto Ejecting in 32 S&W Long), but then the seller said "It works like a Colt... While at full cock, pulling on the trigger puts more pressure on the hand and the action is locked nice and tight." Then he proceeded to show me, and sure enough, if you dropped the hammer and kept the trigger held back tight, the amount of play was greatly reduced.
You can remove the cylinder and see this too... With the cylinder out and the hammer cocked, the hand will be in X position; then when the trigger is pulled, on 2 of mine, the hand visibly raises up/forward maybe 1/32" or so.
Anyway, I was curious if you concur with this observation as well.
I do appreciate you sharing your expertise about these fine old handguns, and FWIW, I was sorry to hear about Bill Goforth's passing; I understand he was quite knowledgeable about these too.
Tight groups.
Old No7