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Rifles, Reloading, Optics, Equipment
Reloading
Case/Bullet Run-out: How Big a Deal Is It?
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<blockquote data-quote="Mikecr" data-source="post: 356197" data-attributes="member: 1521"><p>A concentricity gage will not show everything. That's the whole point of it.</p><p>Given this, and it's ability to tweek indicated concentricity, it provides very low & consistant readings. I had & used an H&H for while. It's well built and does just what it's designed to do(but not what we need IMO).</p><p>This is so much easier than fixing all the problems to get low TIR,, and many reloaders favor easy.</p><p>They take shortcuts like weighing brass, instead of actually checking H20 capacity, etc..</p><p></p><p>On the flip-side a runout gage will not stop reading at concentric. It will continue to show every wiggle in your ammo until you have worked them all out. It can be brutal, so people do silly things like 'halving' TIR to assume pseudo concentricity.</p><p>Don't fool yourself. Straight ammo will measure so from every direction.</p><p></p><p>Anyway, debates about gadgetry always go roundy. But I believe this combination is the best, as it is all you need to cull for best brass, and verify ammo has low runout:</p><p></p><p><a href="http://img686.imageshack.us/i/tirz.jpg/" target="_blank"><img src="http://img686.imageshack.us/img686/4697/tirz.th.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p><a href="http://img692.imageshack.us/i/59125496.jpg/" target="_blank"><img src="http://img692.imageshack.us/img692/4145/59125496.th.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p></blockquote><p></p>
[QUOTE="Mikecr, post: 356197, member: 1521"] A concentricity gage will not show everything. That's the whole point of it. Given this, and it's ability to tweek indicated concentricity, it provides very low & consistant readings. I had & used an H&H for while. It's well built and does just what it's designed to do(but not what we need IMO). This is so much easier than fixing all the problems to get low TIR,, and many reloaders favor easy. They take shortcuts like weighing brass, instead of actually checking H20 capacity, etc.. On the flip-side a runout gage will not stop reading at concentric. It will continue to show every wiggle in your ammo until you have worked them all out. It can be brutal, so people do silly things like 'halving' TIR to assume pseudo concentricity. Don't fool yourself. Straight ammo will measure so from every direction. Anyway, debates about gadgetry always go roundy. But I believe this combination is the best, as it is all you need to cull for best brass, and verify ammo has low runout: [URL=http://img686.imageshack.us/i/tirz.jpg/][IMG]http://img686.imageshack.us/img686/4697/tirz.th.jpg[/IMG][/URL] [URL=http://img692.imageshack.us/i/59125496.jpg/][IMG]http://img692.imageshack.us/img692/4145/59125496.th.jpg[/IMG][/URL] [/QUOTE]
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Case/Bullet Run-out: How Big a Deal Is It?
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