When the primer is forced into the pocket, it's compressed in diameter and that will lengthen it slightly, at least it will tend to raise the dome in the center of the cup. .002" really isn't quite enough clearance and I suspect those are rifle primers. A good carbide pocket uniformer will clean up and deepen the bottom of the pocket enough for this combo to work. I got mine from Sinclair but I'm sure they are commonly available.
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