I'll try and answer this for you the bast that I can based on my experience and guns. I have a 625 and a 627, both are 6 shot, steel frame, 5" full lugged barrel guns. I shoot a 230gr. plated bullet at approx 850fps. out of the 625. In the 627 I use my "magnum lite" load, a 158gr. plated bullet in a .357 case somewhere between 1,100 and 1,200 fps.

Felt recoil in my 627 with these loads is next to nothing, lighter than shooting .38's out of my 686 4". There is more bark to the muzzle blast than the 625 but felt recoil is considerably less. My 627 is an extremely heavy gun and it does dampen recoil. Makes for a lot of fun at the indoor range to do a rapid fire of full magnum loads, lots of flash and boom with low felt recoil.