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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Custom reamers. . .what is involved?
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<blockquote data-quote="Mikecr" data-source="post: 1014054" data-attributes="member: 1521"><p>It will take considerably more than 15thou of pushback to reach .355 neck length, as the parent neck length is only .287 (I get 68thou needed).</p><p>I think it would take a form die at a low shoulder angle to prevent collapsing of the shoulder, and then fireforming to finish. You will have a huge donut, and you'll probably wish to turn this out before the fireforming. You can use a standard die to get through fireforming and then send formed cases off to JLC Precision or another custom die maker for a sizing die. I don't know who the best die maker would be for a seating die, if threaded. If using Wilson, you could have a blank seater die chambered along with your barrel(for bullet seating) using the same reamer.</p><p>The reamer/chamber is easiest in planning here.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1014054, member: 1521"] It will take considerably more than 15thou of pushback to reach .355 neck length, as the parent neck length is only .287 (I get 68thou needed). I think it would take a form die at a low shoulder angle to prevent collapsing of the shoulder, and then fireforming to finish. You will have a huge donut, and you'll probably wish to turn this out before the fireforming. You can use a standard die to get through fireforming and then send formed cases off to JLC Precision or another custom die maker for a sizing die. I don't know who the best die maker would be for a seating die, if threaded. If using Wilson, you could have a blank seater die chambered along with your barrel(for bullet seating) using the same reamer. The reamer/chamber is easiest in planning here. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Custom reamers. . .what is involved?
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