Originally Posted by DukesDad
but on further inspection of the cases I am getting a slight amount of primer flattening. Should I scrap the load?
A "slight amount of primer flattening" is normal. Cratered primers are a sign of over pressure.
Here are two cases shot from my US Model of 1917, 30-06.
The cratered primer on the right is, (as I see it,) borderline overpressure. That is a slight cratered primer, I've seen a lot worse.
If your cases are flat on the edges like on the right, but do not show the raised edges of a crater; I would not consider them overpressure.
I'd like to revise the last sentence.
If your cases are flat on the edges like on the right, but do not show the raised edges of a crater, and you find no other overpressure signs; I would not consider them overpressure.
This is a pic of an overpressure case with no cratering. The ejector mark on the face, along with the extremely flattened primer
; are the overpressure signs in that instance.