Question for Ranch Dog about his pressure notes and QuickLoad

We all know that changing primers results in the need to adjust our handloads and QuickLoad provides a default ‘initial starting pressure’ that could be adjusted from the minimal WOLF primers up to the Federal GM Lg Rifle Magnum Match but without the pressure trace analysis it’s difficult  to determine what that is.
I’ve tried some velocity measurements with said WOLF primers up to Winchester Magnums trying to use that initial pressure value to affect the velocity change after reading this article: http://www.the-long-family.com/primer_study.htm but I my results were less than spectacular at assigning a value to a primer.
You mentioned in your Pressure Study notes your pressure-trace analysis experience so I thought I’d ask about it pertaining to primers. Especially if we are loading to lower densities & pressures and for OCD guys like me who try to substantiate these variables.
Thanx.