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Rifles, Reloading, Optics, Equipment
Reloading
How often do you bump the shoulder back?
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<blockquote data-quote="Mikecr" data-source="post: 1138118" data-attributes="member: 1521"><p>Not sure where the 1thou question applies. Do you mean in shoulder datum?</p><p></p><p>I can and do make perfect as practical ammo. It's one thing I just do.</p><p>My bullets are seated to desired CBTO with well under .5thou total variance.</p><p>Cases with my fitted 6.5wssm have never been sized other than shoulder bumping, and have ~40 reloads now. No re-trimming, annealing, no body or neck sizing at all. Runout still below measure(<.0005 TIR, surface profile interferes with lower measure than this). Next barrel chamber gets 45deg+ shoulders to end shoulder bumping as well.</p><p>H20 capacities still matching. </p><p></p><p>It's evident to me that I will not ever 'eventually have a problem' with this. So fitted is the way I'm going with all future cartridges. I don't care about factory labs shooting rat turds for ammo. I'm confident I have my guns shooting as well as anyone could make them shoot.</p><p></p><p>To the fellow who thinks crooked ammo is self centered by bullet release; The necks are first to expand the roughly .000000000000000000001" needed to freely release a bullet. Every other dimension afterwards means nothing to results -other than reloading. This is why runout means little while clearances are high. Tighten chamber clearances, and runout begins to matter. </p><p>Crooked ammo bound in a chamber(chamber tensions) can mess up results. These are pressure points similar to laying your thumb on the action tang during firing(don't take much). So of course you want these tensions consistent.</p><p></p><p>I suspect this is why folks see improved results with FL sizing. If I measured their ammo on a v-block I'd see ugly runout beyond what I'm used to. Most are probably shooting poorly designed rat turds as well, so they're candidates for 'eventual problems' in neck sizing only.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1138118, member: 1521"] Not sure where the 1thou question applies. Do you mean in shoulder datum? I can and do make perfect as practical ammo. It's one thing I just do. My bullets are seated to desired CBTO with well under .5thou total variance. Cases with my fitted 6.5wssm have never been sized other than shoulder bumping, and have ~40 reloads now. No re-trimming, annealing, no body or neck sizing at all. Runout still below measure(<.0005 TIR, surface profile interferes with lower measure than this). Next barrel chamber gets 45deg+ shoulders to end shoulder bumping as well. H20 capacities still matching. It's evident to me that I will not ever 'eventually have a problem' with this. So fitted is the way I'm going with all future cartridges. I don't care about factory labs shooting rat turds for ammo. I'm confident I have my guns shooting as well as anyone could make them shoot. To the fellow who thinks crooked ammo is self centered by bullet release; The necks are first to expand the roughly .000000000000000000001" needed to freely release a bullet. Every other dimension afterwards means nothing to results -other than reloading. This is why runout means little while clearances are high. Tighten chamber clearances, and runout begins to matter. Crooked ammo bound in a chamber(chamber tensions) can mess up results. These are pressure points similar to laying your thumb on the action tang during firing(don't take much). So of course you want these tensions consistent. I suspect this is why folks see improved results with FL sizing. If I measured their ammo on a v-block I'd see ugly runout beyond what I'm used to. Most are probably shooting poorly designed rat turds as well, so they're candidates for 'eventual problems' in neck sizing only. [/QUOTE]
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Reloading
How often do you bump the shoulder back?
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