You are getting awful defensive when most of us are just agreeing to what you have already said......
...and that is, when reloading, complacency/laziness has no place at the reloading bench. Assuming(I think you are saying, taking something for granted, not grated like cheese) is just going to get one in trouble. Most of the time when one reads of incidents of overpressure or squib loads, it comes down to someone assuming it was still Bullseye in the powder measure or assuming that the powder measure was still throwing 5.6 gr. Sometimes it's easier to assume than to take the time to make sure, i.e., complacency and laziness. Same goes for making sure our bench is organized and our tools are in proper working condition. That way we don't have to pull bullets because,
as for this problem,
from everything I have read in this thread....I'm thinkin' operator error more than primer brand.
You're not getting any sympathy here, and for good reason.