Detailed information on spring?(might be useful for builders

Hi guys, i’ve check out the big reference file, yet i have some questions on the spring still.

See if you may help me out with these.

Spring solid height

Spring precompression height (height when assembled into the gun, i know it will vary with the powerwheel setting)

spring compression distance? (probably the same length as the distance of breech travel, what may that be?)

stock spring rate < (10pounds correct?)