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Rifles, Reloading, Optics, Equipment
Reloading
Neck tension-- how much ???
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<blockquote data-quote="Mikecr" data-source="post: 374142" data-attributes="member: 1521"><p>Woods, yes frictional differences affect pull force. But this is not a factor.</p><p>A neck fully expands on firing before the bullet has moved.</p><p></p><p>What does affect tension in a meaningful(and useful) way, is the amount of neck sizing length. This can be useful for tuning with some component combinations.</p><p>I start off with one cal of neck sizing at 1thou under(after springback).</p><p>Just an easy standard for me, that's worked well w/regard to ES.</p><p></p><p>Some day I'll play with it further(best load over wide temp range-vs-tension).</p><p>But my main focus has been tension variance, as compared with an instrumented mandrel.</p><p><a href="http://img694.imageshack.us/i/74580698.jpg/" target="_blank"><img src="http://img694.imageshack.us/img694/4572/74580698.th.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p></blockquote><p></p>
[QUOTE="Mikecr, post: 374142, member: 1521"] Woods, yes frictional differences affect pull force. But this is not a factor. A neck fully expands on firing before the bullet has moved. What does affect tension in a meaningful(and useful) way, is the amount of neck sizing length. This can be useful for tuning with some component combinations. I start off with one cal of neck sizing at 1thou under(after springback). Just an easy standard for me, that's worked well w/regard to ES. Some day I'll play with it further(best load over wide temp range-vs-tension). But my main focus has been tension variance, as compared with an instrumented mandrel. [URL=http://img694.imageshack.us/i/74580698.jpg/][IMG]http://img694.imageshack.us/img694/4572/74580698.th.jpg[/IMG][/URL] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Neck tension-- how much ???
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