I was at a gun show last week and talking with Rick from R&R Bullets and he showed me one of these compensating dampers (recoil pads). It's remarkably shock absorbent, feels like a memory foam or stiff gel.
Anyway, thought I'd pass it on if your a shooter looking for a good recoil pad. He says the market for $150.
https://www.youtube.com/watch?v=NOSszCZzkYU
See the web site for more info: http://falconstrike.ca/