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Rifles, Reloading, Optics, Equipment
Gunsmithing
280 Ackley Chamber
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<blockquote data-quote="DirectDrive" data-source="post: 2097546" data-attributes="member: 116300"><p>Redding is using "Datum Line" in their description and the drawings use Neck-Shoulder Intersect dimensions.</p><p>So, two different locations mebbe.</p><p></p><p>And the 4D provided drawings posted above may be wrong.</p><p></p><p>This is from Lee Precision :</p><p>The original 280 Ackley has a neck intersection distance of 2.188" and the SAAMI has a distance of 2.1795" so there is enough clearance in the collet to accommodate the SAAMI cartridge.</p><p></p><p>Hornady shows the 280 Ackley Traditional NS intersect at 2.180"</p><p></p><p>Nosler shows the 280 Ackley SAAMI NS intersect at 2.1820"</p><p><img src="https://load-data.nosler.com/nosler-load-data/image/280-ackley-improved/280-AI-120gr.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>So dimensions are all over the place for this cartridge.</p><p>The -.014 for the SAAMI seems to be widely accepted.</p><p>Nosler screwing things up is also widely accepted.</p></blockquote><p></p>
[QUOTE="DirectDrive, post: 2097546, member: 116300"] Redding is using "Datum Line" in their description and the drawings use Neck-Shoulder Intersect dimensions. So, two different locations mebbe. And the 4D provided drawings posted above may be wrong. This is from Lee Precision : The original 280 Ackley has a neck intersection distance of 2.188" and the SAAMI has a distance of 2.1795" so there is enough clearance in the collet to accommodate the SAAMI cartridge. Hornady shows the 280 Ackley Traditional NS intersect at 2.180" Nosler shows the 280 Ackley SAAMI NS intersect at 2.1820" [IMG]https://load-data.nosler.com/nosler-load-data/image/280-ackley-improved/280-AI-120gr.jpg[/IMG] So dimensions are all over the place for this cartridge. The -.014 for the SAAMI seems to be widely accepted. Nosler screwing things up is also widely accepted. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
280 Ackley Chamber
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