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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Innovative Technologies Collet Die
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<blockquote data-quote="entoptics" data-source="post: 1801679" data-attributes="member: 104268"><p></p><p>The die instructions result in excessive shoulder headspace for almost all rifles. They bump the shoulder back far enough that the shortest possible chamber will still have enough clearance to chamber a resized piece of brass properly.</p><p></p><p>Very few rifles have "the shortest possible chamber".</p><p></p><p>Invest in some gauges, and measure your fired brass from base to shoulder datum. Once you have this number, set up your die too far out, and size a case and measure the same base to shoulder. Often, when the die is far away from correct, the case <em>will actually grow a little</em>. Slowly lower the die 1/16th of a turn at a time, sizing a different case each time, until you achieve 0.0015" -0.0035" reduction from the fired measurement. As you get close, 1/32 of a turn will be all you need to start dialing it in.</p><p></p><p>Bam. Done. You now have brass that will chamber nicely, but won't grow excessively when fired. There's some theories that suggest it will be more accurate too. </p><p></p><p>Like Baby Bear's soup. Not to loose, but not too tight.</p></blockquote><p></p>
[QUOTE="entoptics, post: 1801679, member: 104268"] [SIZE=14px][/SIZE] The die instructions result in excessive shoulder headspace for almost all rifles. They bump the shoulder back far enough that the shortest possible chamber will still have enough clearance to chamber a resized piece of brass properly. Very few rifles have "the shortest possible chamber". Invest in some gauges, and measure your fired brass from base to shoulder datum. Once you have this number, set up your die too far out, and size a case and measure the same base to shoulder. Often, when the die is far away from correct, the case [I]will actually grow a little[/I]. Slowly lower the die 1/16th of a turn at a time, sizing a different case each time, until you achieve 0.0015" -0.0035" reduction from the fired measurement. As you get close, 1/32 of a turn will be all you need to start dialing it in. Bam. Done. You now have brass that will chamber nicely, but won't grow excessively when fired. There's some theories that suggest it will be more accurate too. Like Baby Bear's soup. Not to loose, but not too tight. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Innovative Technologies Collet Die
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