OK I am not being a jerk. But, reloading is not a place to be making mistakes..
actually.. he didn't make a mistake.
a mistake.. such as would cause damage or injury is a set of events, start to finish, that went uncaught.
if he loaded up a set wrong, never caught it UNTILL there was a problem.. then that would be a mistake.
noticing a procedural error part way thru, and then correcting it and proceding, means he's being observant at least..\
those double checks we make at each step help cath any oversite or mechanical failures that may happen ( double charge.. etc... failure to add a primer before charging.. etc.
lets not kill him and burn him at the stake because he forgot to size a few cases before priming.
WAY easy to correct without carving an X across his face.
we are all human.
just sayin...