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Rifles, Reloading, Optics, Equipment
Reloading
Neck Turning
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<blockquote data-quote="Mikecr" data-source="post: 2161367" data-attributes="member: 1521"><p>It depends on some things.</p><p>Runout hurts only when it exceeds your clearances.</p><p>With tension variances, the hurt is tied to load sensitivities to it.</p><p>Most of the time this is easy to manage without neck turning.</p><p></p><p>If your chamber clearances are not excessive, then you'll move brass thickness less, making straighter ammo.</p><p>And you can carefully measure NEW neck thickness and variances of it. Culling out offenders.</p><p>I don't turn for a 223Rem barrel, that produces no worse than 3/8moa to 500yds. The lapua brown box cases for it have quite a few reload cycles, and so far no issues or even need of re-annealing. It's a Cooper, I think Wilson barrel.</p><p>I measure & match pre-seating forces with each neck -using instrumented mandrel expansion -before bullet seating.</p><p></p><p>With pretty much every other gun/chamber for the past 30yrs, I've designed and held the reamers. I go tighter than most folks, requiring neck turning, and my sizing overall could be described as 'barely'. I've yet to see it <em>not</em> work out really well, but this is with smaller & improved cartridges.</p><p>Nothing 30-06-like</p><p></p><p>So I guess what I'm saying is that with a factory gun (like my Cooper) I don't neck turn, and it hasn't hurt me.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 2161367, member: 1521"] It depends on some things. Runout hurts only when it exceeds your clearances. With tension variances, the hurt is tied to load sensitivities to it. Most of the time this is easy to manage without neck turning. If your chamber clearances are not excessive, then you'll move brass thickness less, making straighter ammo. And you can carefully measure NEW neck thickness and variances of it. Culling out offenders. I don't turn for a 223Rem barrel, that produces no worse than 3/8moa to 500yds. The lapua brown box cases for it have quite a few reload cycles, and so far no issues or even need of re-annealing. It's a Cooper, I think Wilson barrel. I measure & match pre-seating forces with each neck -using instrumented mandrel expansion -before bullet seating. With pretty much every other gun/chamber for the past 30yrs, I've designed and held the reamers. I go tighter than most folks, requiring neck turning, and my sizing overall could be described as 'barely'. I've yet to see it [I]not[/I] work out really well, but this is with smaller & improved cartridges. Nothing 30-06-like So I guess what I'm saying is that with a factory gun (like my Cooper) I don't neck turn, and it hasn't hurt me. [/QUOTE]
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