Once I started actually conducting pressure testing, I began to question my "youthful load development".

One day we pressure tested some proof loads that were ~80,000 PSI.

Visual observation of case #1 would make most handloaders say "Think we are just about maxed out. Might stop there"

Visual observation of case #2 would make most handloaders say "Wow, we are getting great velocity but not much pressure sign. Let's go up another few tenths and see what happens".

I went home and pulled some handloaded cartridges that evening.

I watch velocity closely now (don't have pressure test equipment any more). If the velocity is high, I know the pressure is high.