Snuffy, I definately see that with commercial rifle cartridges,, like Superformance .270 win and some Federal stuff
It holds true with some commercial, high-pressure cartridges but even then there are too many variables to be definitive.
With a cartridge like 45acp, primers are going to be irrelevent. Those same primers are used in cartridges whose STARTING loads are 50% higher than 45acp max loads and have max loads more than double 45acp maxes.
45acp max loads are barely enough to push the primer back flush with the case, say nothing of flattening one.
Still happily answering to the call-sign Peetza.
The problem, as you so eloquently put it, is choice.
He is no fool who gives what he can not keep to gain what he can not lose.
-Jim Eliott, paraphrasing Philip Henry.