Depending on what type of action and the condition of the firing pin hole, cratered primers are not always the best indicator of over pressure. However, with fairly new brass, a difficult bolt lift is trying to tell you something.
The flattening of the primer tells you a lot. Learn to look at the outside radius, and how much is left. These two BR cases are out of my 6BR with a 12 twist that I shoot 80 grn Bart’s out of. The one on the left is 33.2 , of Accurate 2495, the one on the right, 34.2. The 34.2 starts to have just a tad of bolt feel with fairly fresh cases. The action is a Bat Neuvo.
I figure the left is about 52000 psi, the right, around 65,000. Notice even with the upper end load, there is no primer crater.
If you are getting a “click” at the top of extraction, that is often an indication of brass that has been fired too many times at higher pressures and no longer responding to sizing with the die on hand.
What type of action?
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