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Rifles, Reloading, Optics, Equipment
Reloading
.280 AI controversy explained ...
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<blockquote data-quote="Pdvdh" data-source="post: 1527705" data-attributes="member: 4191"><p>The Redding website explanation on the difference between the "traditional" 280 AI and the SAAMI 280 Ackley is exactly correct. I've done the math and proven it.</p><p></p><p>SO, you can either purchase a new resizing die for the SAAMI cartridge..., or if you have the capability;</p><p></p><p>1) Grinding 0.014" off the bottom of your Redding "40-degree" resizing die will convert it to the SAAMI 280 Ackley Improved. I'd take off ~ 0.015", just to make sure.</p><p></p><p>2) Or, even simpler, remove 0.014" off the top surface of a standard 280 shell holder, and your existing "40-degree" resizing die will resize cases to the SAAMI 280 Ackley dimensions. I say simpler because the steel shell holders aren't hardened, heat treated, steel. It will be easier to grind, sand, file 0.014" off the face of the shell holder for that reason. Also, if you booger it up in the process, shell holders are inexpensive compared to resizing dies.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 1527705, member: 4191"] The Redding website explanation on the difference between the "traditional" 280 AI and the SAAMI 280 Ackley is exactly correct. I've done the math and proven it. SO, you can either purchase a new resizing die for the SAAMI cartridge..., or if you have the capability; 1) Grinding 0.014" off the bottom of your Redding "40-degree" resizing die will convert it to the SAAMI 280 Ackley Improved. I'd take off ~ 0.015", just to make sure. 2) Or, even simpler, remove 0.014" off the top surface of a standard 280 shell holder, and your existing "40-degree" resizing die will resize cases to the SAAMI 280 Ackley dimensions. I say simpler because the steel shell holders aren't hardened, heat treated, steel. It will be easier to grind, sand, file 0.014" off the face of the shell holder for that reason. Also, if you booger it up in the process, shell holders are inexpensive compared to resizing dies. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
.280 AI controversy explained ...
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