Thanks for the information. Yes, the problem is the ammo or rather the primer in the ammo. The gun is right on spec.
c3shooter, I checked the firing pin protrusion with the "hole depth rod" feature on my dial calipers. The dial marks are 0.001". It worked nicely and was quick. The firing pin protrusion is between 0.035" and 0.036". This is at the top of the range listed as 0.032" to 0.037" by one reference. The indentation in the two primers by a quick glance appeared to be the full amount of the protrusion, but I no longer have the two defective rounds. I guess the defect in the primer could be anything. They were never exposed to moisture, that I know of.
Yes, I will use different ammo for serious shooting, and the defective ammo can be disposed of by punching holes in targets and cans.
Replies are very much appreciated.
I consider this case closed.