Back to Back shock test

[bwizz]

Please someone clarify, re preload . When I had my 1000 shock re gassed by Revvs racing , I had a long conversation with the owner.
He reconned that the pre load C adjustment is to set sag only! He implied that it does not make any difference to spring rate .Other posters seem to indicate that it does ? Are shock springs progressive if they are not. ajusting should not "in my basic understanding,"effect the percieved hardness or softness of the spring.
Can of worms here I am sure !