Remington 7 1/2 Bench Rest Primer?

NB Rifles

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Is this a standard thickness primer or one of the thinner ones? There was a chart posted a while ago giving the thickness of the cup of different primers but I can't locate it now. I had some issues with a batch of federal bench rest primers that I believe were thinner than standards.
 
Guess which primer Remington used to load in the 5.56 NATO ammunition when they ran our American Lake City Army Ammunition Plant.

Any primer cup with a thickness .025 is what should be used in semiautos to prevent slam fires. ;)

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Guess which primer has more horse power.

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