Looking at your brass dimensions, even if the primers are seated another .002" below the casehead thrown in for good measure, a .035" protrusion is more than enough to ignite a primer. As a matter of fact the shorter protrusion allows the firing spring more time to accelerate the firing pin increasing its primer impact energy. Increasing the protrusion beyond .035" does the exact opposite. More isn't always better.
Looking at your primers I'm seeing inconsistencies in the pin fall, less impact depth which is a result of something padding the pin fall. At this point I'd pull it out of the stock, primer a few pieces of brass then try firing them. If they ignite then its something with the stock. Typically its the sear making contact.
If they don't ignite then you have an action issue.
The very first thing I would look at is the sear. Remove the trigger leaving the sear installed and check it's movement making sure it moves freely it's entire length the travel. Next reinstall the trigger and check it's full length of travel again.
Next, you'll have to look at the bolt assembly. There's a laundry list of possible problems that can cause padding of the pin fall, the cocking piece sleeve out of round( egg shaped), the firing pin bent or ground off center, the bolthead retaining pin hanging up, crud in the bolthead shaft at the step past the vent..... the list goes on. Its only a matter of finding which one or a combination of them.
Bill
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