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Rifles, Reloading, Optics, Equipment
Reloading
Do I need to neck turn?
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<blockquote data-quote="Mikecr" data-source="post: 819809" data-attributes="member: 1521"><p>Bart, the problem with a 'bullet release force' measurement is that it does not actually represent 'bullet grip' , or tension. In fact, if not controlled, it might mean nothing at all.</p><p></p><p>I compare seating forces with an electronic loadcell, as I've yet to design/built an actual tool for grip force measure. I do so knowing that this is relative and a not real internal ballistic factor.</p><p>But since I control every aspect of it so well, it does work to meet it's intent for me.</p><p>That is, I can actually see a measure implying tighter gripping force on both my meter and chrono.</p><p></p><p>There are two valid neck tension paths related:</p><p>1. Lighter tension = lower tension variance = lower ES and better tune(with load A)</p><p>2. Heavier tension = consistent pressure peak = lower ES and better tune(with load B)</p><p>They conflict, and there are of course gains AND prices to pay elsewhere, with each(and everything).</p><p></p><p>Often PB BR shooters need both, so they turn necks thinner and jam seat to effectively accomplish both. This is purely part of reaching tune at competitive load levels, and in capacities way smaller than hunting capacity cartridges. A disadvantage is in loosing seating adjustment off the lands.</p><p>Reloaders for distant shooting are challenged with more abstracts, and there are no trends that hold in neck thickness. But, with this there are fewer constraints(it's wide open).</p><p></p><p>A big ole Weatherby shooter might get his system shooting pretty good for a big ole Weatherby, 1/8" off the lands and with necks 15thou thick, while breaking every rule in point blank BR. </p><p>That's fine, it's not a tiny little BR toy.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 819809, member: 1521"] Bart, the problem with a 'bullet release force' measurement is that it does not actually represent 'bullet grip' , or tension. In fact, if not controlled, it might mean nothing at all. I compare seating forces with an electronic loadcell, as I've yet to design/built an actual tool for grip force measure. I do so knowing that this is relative and a not real internal ballistic factor. But since I control every aspect of it so well, it does work to meet it's intent for me. That is, I can actually see a measure implying tighter gripping force on both my meter and chrono. There are two valid neck tension paths related: 1. Lighter tension = lower tension variance = lower ES and better tune(with load A) 2. Heavier tension = consistent pressure peak = lower ES and better tune(with load B) They conflict, and there are of course gains AND prices to pay elsewhere, with each(and everything). Often PB BR shooters need both, so they turn necks thinner and jam seat to effectively accomplish both. This is purely part of reaching tune at competitive load levels, and in capacities way smaller than hunting capacity cartridges. A disadvantage is in loosing seating adjustment off the lands. Reloaders for distant shooting are challenged with more abstracts, and there are no trends that hold in neck thickness. But, with this there are fewer constraints(it's wide open). A big ole Weatherby shooter might get his system shooting pretty good for a big ole Weatherby, 1/8" off the lands and with necks 15thou thick, while breaking every rule in point blank BR. That's fine, it's not a tiny little BR toy. [/QUOTE]
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Reloading
Do I need to neck turn?
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