I have an original Russian and a Uberti NM #3 you will notice the hump is far less in both look & feel...
However, I found the Uberti OEM walnut grips were rounder (thicker) I changed mine out to S&W hard rubber
it transformed the feel in my hand ( short fingers) and gave me a better purchase & thumb reach.
BTW...the S&W grips were a spot on fit , only mod was the location of the little frame pin hole ( about 1/6" off )
and a very minor rear step adjustment by the grips S&W logo. A coupla strokes with a flat file on the grip scales &
enlarge to grips pin location hole & Bob's your Uncle.