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Rifles, Reloading, Optics, Equipment
Reloading
Neck tension and max bullet grip force
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<blockquote data-quote="Mikecr" data-source="post: 2134495" data-attributes="member: 1521"><p>You're right. Thicker brass can provide considerably more tension (and tension variance). </p><p>I suspect .308 circumference necks produce a flatter stress-strain curve than .224 necks, and that this would offset a greater area of gripping by some proportion.</p><p>We have shoulder angles resisting expansion, and 40deg shoulders would aid necks in resisting expansion more so than 12deg shoulders.</p><p>We have slightly different cartridge brass alloys, and of course variances in work hardness produced with our sizing plans.</p><p></p><p>With this, ultimately, we need a tool to <u>measure</u> neck tension. Not hardness,, not seating forces,, but actual hoop stress per use dimension.</p><p>If it was simple though, somebody would have done it.</p><p>I don't think we'll see it..</p></blockquote><p></p>
[QUOTE="Mikecr, post: 2134495, member: 1521"] You're right. Thicker brass can provide considerably more tension (and tension variance). I suspect .308 circumference necks produce a flatter stress-strain curve than .224 necks, and that this would offset a greater area of gripping by some proportion. We have shoulder angles resisting expansion, and 40deg shoulders would aid necks in resisting expansion more so than 12deg shoulders. We have slightly different cartridge brass alloys, and of course variances in work hardness produced with our sizing plans. With this, ultimately, we need a tool to [U]measure[/U] neck tension. Not hardness,, not seating forces,, but actual hoop stress per use dimension. If it was simple though, somebody would have done it. I don't think we'll see it.. [/QUOTE]
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Reloading
Neck tension and max bullet grip force
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