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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
260 AI help
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<blockquote data-quote="J E Custom" data-source="post: 2026948" data-attributes="member: 2736"><p>I don't recommend bumping the shoulder at all until it wont chamber and then only enough to allow it to chamber. Properly cut AI chambers are very good about holding their size and length after firing. (The reason many chose this design over standard case designs).</p><p></p><p>I would recommend prepping the 260 brass to SAMMI dimensions before it is fireformed to get a base line for the amount of growth after fireforming and then neck size only for the second firing and you will see how little it changes compared to conventional cases.</p><p></p><p>The less you work your brass, the longer it will last, and the greater the accuracy will be in my experience.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 2026948, member: 2736"] I don't recommend bumping the shoulder at all until it wont chamber and then only enough to allow it to chamber. Properly cut AI chambers are very good about holding their size and length after firing. (The reason many chose this design over standard case designs). I would recommend prepping the 260 brass to SAMMI dimensions before it is fireformed to get a base line for the amount of growth after fireforming and then neck size only for the second firing and you will see how little it changes compared to conventional cases. The less you work your brass, the longer it will last, and the greater the accuracy will be in my experience. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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260 AI help
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