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Rifles, Reloading, Optics, Equipment
Reloading
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<blockquote data-quote="Pdvdh" data-source="post: 1306860" data-attributes="member: 4191"><p>Measuring case head expansion is an additional tool in the tool box to monitor pressure. The Hornady techs must have bad eyes, as I've successfully measured case head expansion for decades now with 0.001" calipers. Yet Hornady states 0.0001" calipers are necessary.</p><p></p><p>They state ~0.0005" measured expansion is an indicator of maximum pressure. I have no troubles reading 0.0003" changes in diameter with quality 0.001" calipers, which is more than sufficient for the associated task. Am not at all motivated to purchase a set of 0.0001" calipers for this use of the calipers.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 1306860, member: 4191"] Measuring case head expansion is an additional tool in the tool box to monitor pressure. The Hornady techs must have bad eyes, as I've successfully measured case head expansion for decades now with 0.001" calipers. Yet Hornady states 0.0001" calipers are necessary. They state ~0.0005" measured expansion is an indicator of maximum pressure. I have no troubles reading 0.0003" changes in diameter with quality 0.001" calipers, which is more than sufficient for the associated task. Am not at all motivated to purchase a set of 0.0001" calipers for this use of the calipers. [/QUOTE]
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