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Rifles, Reloading, Optics, Equipment
Reloading
The first sign of excessive pressure is...
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<blockquote data-quote="jimbires" data-source="post: 285097" data-attributes="member: 11011"><p>I use a blade micrometer . measure the case head before you fire and measure it again after you fire . it should be expanded about .0005 max . that's half of a thousandths . make sure to put the mic in the same location . I align the one blade up with the " 7 " on the head stamp . my 7 rem mag makes the federal primer look like a top hat with the minimum starting load , so I have used case head expansion for my pressure indicator . on the belted case I measure right on the belt . Jim</p></blockquote><p></p>
[QUOTE="jimbires, post: 285097, member: 11011"] I use a blade micrometer . measure the case head before you fire and measure it again after you fire . it should be expanded about .0005 max . that's half of a thousandths . make sure to put the mic in the same location . I align the one blade up with the " 7 " on the head stamp . my 7 rem mag makes the federal primer look like a top hat with the minimum starting load , so I have used case head expansion for my pressure indicator . on the belted case I measure right on the belt . Jim [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
The first sign of excessive pressure is...
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