Mike, it's not easy at all. There are just too many variables to include....body type, musculature, stock design, front-to-back balance of the rifle, recoil energy, whatever material the bipod is resting on, shooter's position, shooter head height above the mat.....there are probably a dozen more but just those would preclude any kind of "technological" answer to dealing with bipod recoil movement.I'm amazed that no Entrepreneur/competitor has acted on basic recoil attributes of bipod shooting -with technology. Just seems so easy to solve..
Modify a Harris to angle legs forward (like 45degs),, just opposite of the tragedy that bipod 'loading' represents. The legs in this configuration could be adjustably damped as well.
Change the feet to slides, and let the gun naturally recoil backward on this -during load development.
If the gun recoils so much as to require shouldering, then that hold force needs to be established as a standard which you found & used as best during load development. Put a load cell in the butt plate feeding an indicator of force, mounted with your gun level. With this, you can apply exactly the same shouldering force shot after shot.