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Rifles, Reloading, Optics, Equipment
Gunsmithing
280 Ackley Chamber
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<blockquote data-quote="Pdvdh" data-source="post: 2097568" data-attributes="member: 4191"><p>Nosler doesn't manufacture reloading dies, so I'd trust Redding or Hornady, companies which both manufacture reloading resizing dies. If they get it wrong, it will eventually cost them money. Best reason in the world for a for-profit business to make sure they're doing it correctly.</p><p></p><p>Since both the traditional 280 AI and the SAAMI Ackley Improved have the identical 40-degree shoulder, it shouldn't matter what headspace reference length is used when comparing the headspace dimension, <em><u>as long as the same reference point</u> to measure the headspace on the case shoulder is used in the comparison</em>. I'd like to think the companies would use whatever reference point SAAMI uses, but I'm no expert on SAAMI specifications. Only that once they're established, they're the equivalent of God.</p><p></p><p>The difference in headspace should indeed be, 0.014" from the cartridge case head to any reference point measured on the case shoulder.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 2097568, member: 4191"] Nosler doesn't manufacture reloading dies, so I'd trust Redding or Hornady, companies which both manufacture reloading resizing dies. If they get it wrong, it will eventually cost them money. Best reason in the world for a for-profit business to make sure they're doing it correctly. Since both the traditional 280 AI and the SAAMI Ackley Improved have the identical 40-degree shoulder, it shouldn't matter what headspace reference length is used when comparing the headspace dimension, [I][U]as long as the same reference point[/U] to measure the headspace on the case shoulder is used in the comparison[/I]. I'd like to think the companies would use whatever reference point SAAMI uses, but I'm no expert on SAAMI specifications. Only that once they're established, they're the equivalent of God. The difference in headspace should indeed be, 0.014" from the cartridge case head to any reference point measured on the case shoulder. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
280 Ackley Chamber
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