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Rifles, Reloading, Optics, Equipment
Reloading
Where to measure runout on VLDs?
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<blockquote data-quote="bigedp51" data-source="post: 1421359" data-attributes="member: 28965"><p>The reloader does not make banana shaped cases.</p><p></p><p>Warped banana shaped cases are caused by cases that are thinner on one side of the case than the other side, and expand more on the thin side side of the case when fired. And when these type cases are fired they warp and become banana shaped.</p><p></p><p>NECO Concentricity, Wall Thickness and Runout Gauge.</p><p><a href="http://www.neconos.com/item/Concentricity-Wall-Thickness-and-Runout-Gauge-12" target="_blank">http://www.neconos.com/item/Concentricity-Wall-Thickness-and-Runout-Gauge-12</a></p><p></p><p><span style="color: #0000b3">"The NECO, patented, Case Gauge is the most versatile instrument available for measuring the various accuracy determining factors of cartridge cases, bullets and loaded ammunition. No other gauge can measure all of the following: 1.Banana curvature of case. 2.Wall and neck thickness variations. 3.Case head squareness. 4.Banana curvature and out-of-round shape of individual bullets. 5.Runout of seated bullet. 6.Total runout of loaded cartridge."</span></p><p><span style="color: #0000b3"></span></p><p><span style="color: #0000b3"><span style="color: #000000">Bottom line, at the Whidden custom die website they tell you they get the most concentric cases from non-bushing full length dies. And the quality of the case and its uniformity plus the chamber governs what happens to the case when its fired.</span></span></p><p></p><p><span style="color: #0000b3"><span style="color: #000000">And Forster full length benchrest dies with their high mounted floating expander will produce resized cases with very little to no neck runout.</span></span></p><p></p><p><span style="color: #0000b3"><span style="color: #000000">And a warped banana shaped case that is only neck sized will be misaligned with the axis of the bore. Meaning the case will be pushing the bullet out of alignment with the bore because the case is egg shaped, and touching one side of the chamber. </span></span></p><p></p><p>Click on the image of Kevin Thomas of Team Lapua USA posting below to enlarge.</p><p><span style="color: #0000b3"><span style="color: #000000"><img src="https://i.imgur.com/Y3IiYL5.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></span></span></p></blockquote><p></p>
[QUOTE="bigedp51, post: 1421359, member: 28965"] The reloader does not make banana shaped cases. Warped banana shaped cases are caused by cases that are thinner on one side of the case than the other side, and expand more on the thin side side of the case when fired. And when these type cases are fired they warp and become banana shaped. NECO Concentricity, Wall Thickness and Runout Gauge. [URL]http://www.neconos.com/item/Concentricity-Wall-Thickness-and-Runout-Gauge-12[/URL] [COLOR=#0000b3]"The NECO, patented, Case Gauge is the most versatile instrument available for measuring the various accuracy determining factors of cartridge cases, bullets and loaded ammunition. No other gauge can measure all of the following: 1.Banana curvature of case. 2.Wall and neck thickness variations. 3.Case head squareness. 4.Banana curvature and out-of-round shape of individual bullets. 5.Runout of seated bullet. 6.Total runout of loaded cartridge." [COLOR=#000000]Bottom line, at the Whidden custom die website they tell you they get the most concentric cases from non-bushing full length dies. And the quality of the case and its uniformity plus the chamber governs what happens to the case when its fired.[/COLOR][/COLOR] [COLOR=#0000b3][COLOR=#000000]And Forster full length benchrest dies with their high mounted floating expander will produce resized cases with very little to no neck runout.[/COLOR][/COLOR] [COLOR=#0000b3][COLOR=#000000][/COLOR][/COLOR] [COLOR=#0000b3][COLOR=#000000]And a warped banana shaped case that is only neck sized will be misaligned with the axis of the bore. Meaning the case will be pushing the bullet out of alignment with the bore because the case is egg shaped, and touching one side of the chamber. [/COLOR][/COLOR] Click on the image of Kevin Thomas of Team Lapua USA posting below to enlarge. [COLOR=#0000b3][COLOR=#000000][IMG]https://i.imgur.com/Y3IiYL5.jpg[/IMG][/COLOR][/COLOR] [/QUOTE]
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Where to measure runout on VLDs?
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