I thought I knew a lot about reading "pressure signs" until I actually began conducting pressure tests according the the SAAMI recommended procedures.
Having to learn the SAAMI procedures and conduct a fair bit of pressure tests made me go home and pull the bullets from my favorite 25/06 load.
I've blown up a bunch of guns. One was unintentional and resulted in significant injury (I was 16). I never want to experience another "pressure failure" unless it is at the end of a long string that is attached to the trigger.
My "Rule of string" for blowing up guns was to estimate how much I thought I needed and double it.
Velocity, in my opinion, is the best predictor of the safety of your loads. Measure it the way you feel is most appropriate for your situation.
