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Rifles, Reloading, Optics, Equipment
Reloading
Novice question about bushing dies
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<blockquote data-quote="Mikecr" data-source="post: 2092358" data-attributes="member: 1521"><p>Neck expansion does not defeat the purpose of downsizing, it's just that <u>pulling</u> expanders through necks comes with detriment as well as gain.</p><p>Mandrels, used with mandrel dies, work far better than button/balls included with common dies.</p><p></p><p>Neck expansion is a pre-seating operation. The spring back from it is biased inward(holding tension) instead of creeping outward(losing tension) over time. It drives thickness variances outward, away from seating bullet bearing (lowering TIR).</p></blockquote><p></p>
[QUOTE="Mikecr, post: 2092358, member: 1521"] Neck expansion does not defeat the purpose of downsizing, it's just that [U]pulling[/U] expanders through necks comes with detriment as well as gain. Mandrels, used with mandrel dies, work far better than button/balls included with common dies. Neck expansion is a pre-seating operation. The spring back from it is biased inward(holding tension) instead of creeping outward(losing tension) over time. It drives thickness variances outward, away from seating bullet bearing (lowering TIR). [/QUOTE]
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Novice question about bushing dies
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