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Rifles, Reloading, Optics, Equipment
Reloading
Redding bushing dies
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<blockquote data-quote="Mikecr" data-source="post: 2568811" data-attributes="member: 1521"><p>Do you have a neck/ball mic for measuring thickness?</p><p>With this you can see how much thickness variance you have with that brass.</p><p></p><p>You can also measure loaded neck OD, and then sized neck OD to see how much you're sizing.</p><p>That will tell you how much you're sizing what thickness variance.</p><p></p><p>Then there is the expander button. These can pull necks off center.</p><p>Remove or turn down the button portion to defeat it. </p><p>Pick up an expander die with mandrel to cover the expansion function in a way that contributes near nothing to neck runout, and can reduce loaded runout as seen on bullets.</p><p></p><p>Thickness variance runs from case mouths all the way to webs. So heavy FL sizing will bring this variance into play full length.</p><p>You end up pulling bananas out of your die.</p><p>If you need FL sizing then you can get a custom FL die made to reduce sizing to less than excess, or,, you can measure thickness variance of each case and cull out those with a lot of variance. Just throw them away.</p><p>Making straight & stable ammo takes either a plan, or pure luck.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 2568811, member: 1521"] Do you have a neck/ball mic for measuring thickness? With this you can see how much thickness variance you have with that brass. You can also measure loaded neck OD, and then sized neck OD to see how much you're sizing. That will tell you how much you're sizing what thickness variance. Then there is the expander button. These can pull necks off center. Remove or turn down the button portion to defeat it. Pick up an expander die with mandrel to cover the expansion function in a way that contributes near nothing to neck runout, and can reduce loaded runout as seen on bullets. Thickness variance runs from case mouths all the way to webs. So heavy FL sizing will bring this variance into play full length. You end up pulling bananas out of your die. If you need FL sizing then you can get a custom FL die made to reduce sizing to less than excess, or,, you can measure thickness variance of each case and cull out those with a lot of variance. Just throw them away. Making straight & stable ammo takes either a plan, or pure luck. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Redding bushing dies
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