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Rifles, Reloading, Optics, Equipment
Reloading
mandrel for case necks...can somebody please explain
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<blockquote data-quote="sedancowboy" data-source="post: 2453105" data-attributes="member: 85874"><p>Shawn</p><p>When we pull a expander Ball back through the neck to set the final neck neck diameter we stretch the neck and introduce more runout.</p><p>We have learned that a Mandrel pushed into the neck does not stretch the neck and introduces much less runout.</p><p>The reason we use a Mandrel to expand the neck instead of relying on the neck bushing is because brass resists the last direction we move it in. Plus the Mandrel pushes the imperfections to the outside of the neck causing more consistent neck tension.</p></blockquote><p></p>
[QUOTE="sedancowboy, post: 2453105, member: 85874"] Shawn When we pull a expander Ball back through the neck to set the final neck neck diameter we stretch the neck and introduce more runout. We have learned that a Mandrel pushed into the neck does not stretch the neck and introduces much less runout. The reason we use a Mandrel to expand the neck instead of relying on the neck bushing is because brass resists the last direction we move it in. Plus the Mandrel pushes the imperfections to the outside of the neck causing more consistent neck tension. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
mandrel for case necks...can somebody please explain
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