It does sound like your headspace is excessive. I think the normal difference between a go gage and a no-go gage is approx. .004. And while I'm here I have a question about your load. I have loaded more 30-06 than I care to think about with the Nosler 150 Ballistic Tip and RL19 powder (my favorite 30-06 powder) but have never used a magnum primer and was wondering why you are? I think you would get much more consistent ignition and lower your pressure levels if you would use a standard LR primer.
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