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Rifles, Reloading, Optics, Equipment
Reloading
Measured headspace variation
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<blockquote data-quote="boomtube" data-source="post: 408843" data-attributes="member: 9215"><p>"...there is a spread of 0.003 btween the longest and shortest case. I have read it should be around 0.001 in variation."</p><p> </p><p>What you read is someone's idealized dreaming, what you've measured is real world results. Variations of that magnitude happen within the same case lots because of small variations in the brass alloy even within individual cases, nothing we can do about that. Ditto the varaitions in the location of your resized shoulders.</p><p> </p><p>It is NOT necessary to set resized case shoulders back at all. They expanded to fit the chamber and shrunk back at least a thou before you extracted and measured them. Just get your longest resized cases pushed back to the longest fired location and let the rest fall where they may.</p></blockquote><p></p>
[QUOTE="boomtube, post: 408843, member: 9215"] "...there is a spread of 0.003 btween the longest and shortest case. I have read it should be around 0.001 in variation." What you read is someone's idealized dreaming, what you've measured is real world results. Variations of that magnitude happen within the same case lots because of small variations in the brass alloy even within individual cases, nothing we can do about that. Ditto the varaitions in the location of your resized shoulders. It is NOT necessary to set resized case shoulders back at all. They expanded to fit the chamber and shrunk back at least a thou before you extracted and measured them. Just get your longest resized cases pushed back to the longest fired location and let the rest fall where they may. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Measured headspace variation
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