Rocket, there’s really nothing to take from your measurements. Unfortunately, there are too many variables, you have no Control variable, and once again, any testing any of us can do is rudimentary at best. Tell Ma, what is it are you trying to understand? I answered your question on the springs in your Build thread. The long & short springs are the same factory spring. It’s just the old one from your rifle has taken a set at the compressed length. As a result, it has lost a portion of its energy retention. Honestly, anything we can do is just going down a rabbit hole. None of what we do is scientific. No one here has the equipment to come close. None of us!

Honestly, this will end up turning into another one of those ridiculous discussions like the one about people believing they could calculate the milliseconds of fire & projectile exiting on the x-number of barrel reverberation, yadda-yadda, or a discussion on Tuning the Action screw torque. When loading can do do it easier & better. LOL!