You don't need to consult the gauges if you hand load. They are for guns that fire factory ammunition that comply to saami specs. You can always fire form your brass to take out the excessive headspace, or head clearance as some experts would insist calling.
As pointed out by the others, the bolt needs to be disassembled when using the gauges. No extractor, no ejector, and no firing pin. Stop when you feel resistance, instead of forcing the bolt to close.
People tends to be scared silly when they think their guns have headspace problem. But you will know better when you understand more.
-TL
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