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Rifles, Reloading, Optics, Equipment
Reloading
Help understanding neck thickness and bushing dies
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<blockquote data-quote="FearNoWind" data-source="post: 1065761" data-attributes="member: 50867"><p>With respect to "does the regular die compress the neck way below 0.338 and then the expander ball brings it back to 0.338" the short answer is yes; most probably. The only way you'll know that for a certainty is to remove the expander ball and measure the neck of the resized case - compare that with the figure you got when you measured it with the expander ball engaged. With that data you'll get a better idea of how much work hardening the FL die and sizing ball are exerting on the case necks.</p><p>I use a FL die without the expander ball. I size the necks .001 under the bullet diameter and then put some insurance into concentricity by using a mandrel to make sure there aren't any kinks in the neck.</p><p>IMO, you'd do well to find a good home for the FL die expander ball and start working with a bushing die (I like the Redding series) fitted into the tube just tight enough so you can hear a slight rattle when you shake the die.</p></blockquote><p></p>
[QUOTE="FearNoWind, post: 1065761, member: 50867"] With respect to "does the regular die compress the neck way below 0.338 and then the expander ball brings it back to 0.338" the short answer is yes; most probably. The only way you'll know that for a certainty is to remove the expander ball and measure the neck of the resized case - compare that with the figure you got when you measured it with the expander ball engaged. With that data you'll get a better idea of how much work hardening the FL die and sizing ball are exerting on the case necks. I use a FL die without the expander ball. I size the necks .001 under the bullet diameter and then put some insurance into concentricity by using a mandrel to make sure there aren't any kinks in the neck. IMO, you'd do well to find a good home for the FL die expander ball and start working with a bushing die (I like the Redding series) fitted into the tube just tight enough so you can hear a slight rattle when you shake the die. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Help understanding neck thickness and bushing dies
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