Originally Posted By: DAM16SXS
A gun could be mounted in a rest with the butt against a stationary stop with a sensor between the butt and the stop to measure and record the force of recoil between different loads.



Dean,
Send me all your Parkers and I'll port them for you. I've ported some trap guns for customers when I was gunsmithing. I may have to think about how to do it with your Parkers. That may take quite a while. I'll have to shoot the guns to get the actual "felt recoil" baseline, probably over a long period of time and variety of shooting situations. This could take a bit of time as well.

More to this thread's topic. The device at this web link is shows a force/time curve that cuts thru most of the questions, positions, suppositions, and head scratching. Recoil is broken down into to characteristics, force and time. Be-all-end-all? Nah. But it's a lot better'n that test I saw a couple decades ago in a magazine where they measured how far the gun moved with some weight attached to it. That simply measured energy under the time/force curve...total energy.
http://www.shootingsoftware.com/recoil.htm