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Rifles, Reloading, Optics, Equipment
Reloading
Question on neck sizing and tension . . .
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<blockquote data-quote="Mikecr" data-source="post: 1266114" data-attributes="member: 1521"><p>Apparently 'a ton of research' has failed to express tension as a tensile force, rather than a dimension(such as simple interference fit).</p><p>I agree that a bushing 2thou under loaded neck diameter is a good choice to begin. Likely just what you need. But this really means nothing directly about tension, much less '.002" of tension'. For one, the neck downsized to 2thou under cal would spring back to ~1thou under cal once pulled from the die. This is fine, because 1thou of interference fit would provide all the tension brass can actually provide(it's normal spring back). Now what that spring back tension is, like in PSI, is unknown right now. Remember that annealing and work hardening would change it, regardless of interference dimension.</p><p></p><p>I guess what I'm saying is: it isn't so simple, and we should not base decisions on misnomers here.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1266114, member: 1521"] Apparently 'a ton of research' has failed to express tension as a tensile force, rather than a dimension(such as simple interference fit). I agree that a bushing 2thou under loaded neck diameter is a good choice to begin. Likely just what you need. But this really means nothing directly about tension, much less '.002" of tension'. For one, the neck downsized to 2thou under cal would spring back to ~1thou under cal once pulled from the die. This is fine, because 1thou of interference fit would provide all the tension brass can actually provide(it's normal spring back). Now what that spring back tension is, like in PSI, is unknown right now. Remember that annealing and work hardening would change it, regardless of interference dimension. I guess what I'm saying is: it isn't so simple, and we should not base decisions on misnomers here. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Question on neck sizing and tension . . .
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