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Old November 12, 2012, 02:21 PM   #20
Join Date: October 26, 2011
Posts: 33
Headspace for .50 BMG

OK guys, then I have a question concerning headspace. I am reloading for a .50BMG and recently purchased a Lyman headspace gauge. Some of my cases are spot on between the minimum and maximum on the gauge but some of my cases are up to .010 shorter than the minimum on the gauge. When loading for a caliber this large I would think this is a large problem but in doing research some say that this measurement is within acceptable ranges, but is that a measurement that will lead to case head separation upon firing in my bolt gun? I have not shot any cases yet and have only reloaded the cases that were completely spot on. AND some of the cases that are short on headspace dimentions are all spot on for OAL after trimming. Any help on this?

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