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Rifles, Reloading, Optics, Equipment
Reloading
Runout problems!
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<blockquote data-quote="Mikecr" data-source="post: 281062" data-attributes="member: 1521"><p>Thinkin out loud here,,</p><p></p><p>A seating die doesn't move necks around like a sizing die. So bullet seating isn't going to increase runout in the necks -unless thickness variance in the neck is pushed outward by the bullet. </p><p></p><p>I get around this with a few tools:</p><p>I cull by thickness variance with this</p><p><a href="http://www.sinclairintl.com/product/8970/Micrometers" target="_blank">Micrometers - Sinclair/Starret Case Neck Micrometer</a></p><p>I push accepted variance outward after sizing/prior to seating, using a mandrel</p><p><a href="http://www.sinclairintl.com/product/5483/Turning-Expander-Mandrels" target="_blank">Turning & Expander Mandrels - Std 7/8-14 Expander Die</a></p><p>I measure runout with this</p><p><a href="http://www.sinclairintl.com/product/5577/Concentricity-Gauges" target="_blank">Concentricity Gauges - Sinclair Concentricity Gage with dial indicator</a></p><p></p><p>Now let's say you have a possible die issue,,</p><p>You could float a few cases while seating as a test of die center.</p><p>Cover the ram with a plate in place of the shell holder, seat bullets allowing the cases to self-center (free of any shell holder -like a hand die), and see if things change.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 281062, member: 1521"] Thinkin out loud here,, A seating die doesn't move necks around like a sizing die. So bullet seating isn't going to increase runout in the necks -unless thickness variance in the neck is pushed outward by the bullet. I get around this with a few tools: I cull by thickness variance with this [url=http://www.sinclairintl.com/product/8970/Micrometers]Micrometers - Sinclair/Starret Case Neck Micrometer[/url] I push accepted variance outward after sizing/prior to seating, using a mandrel [url=http://www.sinclairintl.com/product/5483/Turning-Expander-Mandrels]Turning & Expander Mandrels - Std 7/8-14 Expander Die[/url] I measure runout with this [url=http://www.sinclairintl.com/product/5577/Concentricity-Gauges]Concentricity Gauges - Sinclair Concentricity Gage with dial indicator[/url] Now let's say you have a possible die issue,, You could float a few cases while seating as a test of die center. Cover the ram with a plate in place of the shell holder, seat bullets allowing the cases to self-center (free of any shell holder -like a hand die), and see if things change. [/QUOTE]
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Runout problems!
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