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The Range
Ammo & Reloading
Extend rifle case life (measuring)(cheap tool)
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<blockquote data-quote="swampratt" data-source="post: 2760275" data-attributes="member: 15054"><p>You just place it on the case after you fire it and note the over all length (OAL) of the case and the flare nut.</p><p>Note the picture in post #1 has a dial caliper measuring the OAL 2.245" This was after full length sizing my brass .308 case.</p><p></p><p>A fired cases measure with the Flare nut installed will measure 2.253" from my gun.</p><p></p><p>What this told me is that even though I followed the die set up directions I was still pushing my case shoulder back all the way to 2.245" which is .008"</p><p></p><p>As the Flare nut flare portion contacts the case shoulder right in the middle and gives a measurement.</p><p></p><p>I used to twist my full length size die in 1/4 turn after it touches the shell holder.</p><p>That pushed the shoulder back too far.. Now I only twist it in less than 1/12 of a turn... and I am not pushing my case shoulders back as far.</p><p></p><p>This flare nut is now a Tool that helps you measure how much you are setting the shoulder back.</p></blockquote><p></p>
[QUOTE="swampratt, post: 2760275, member: 15054"] You just place it on the case after you fire it and note the over all length (OAL) of the case and the flare nut. Note the picture in post #1 has a dial caliper measuring the OAL 2.245" This was after full length sizing my brass .308 case. A fired cases measure with the Flare nut installed will measure 2.253" from my gun. What this told me is that even though I followed the die set up directions I was still pushing my case shoulder back all the way to 2.245" which is .008" As the Flare nut flare portion contacts the case shoulder right in the middle and gives a measurement. I used to twist my full length size die in 1/4 turn after it touches the shell holder. That pushed the shoulder back too far.. Now I only twist it in less than 1/12 of a turn... and I am not pushing my case shoulders back as far. This flare nut is now a Tool that helps you measure how much you are setting the shoulder back. [/QUOTE]
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