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Rifles, Reloading, Optics, Equipment
Reloading
Brass neck getting thicker.
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<blockquote data-quote="Mikecr" data-source="post: 591128" data-attributes="member: 1521"><p>What you have here is normal with FL sized -unturned necks.</p><p>Reloading 101; Brass tapers in thickness from the webs all the way to the mouths.</p><p>That means neck brass nearest the shoulders is thicker than neck brass nearest the mouths.</p><p>When you FL sized the necks, you pushed the entire neck(thick and thin) inward, and for no good reason. Now, the neck ODs are somewhat uniform throughout their lengths, at the expense of tapering neck IDs(which will increase tension).</p><p></p><p></p><p>It's actually a little late for that as the necks have taken a set by the FL sizing of them. Best to do it (expanding only, and to the turning mandrel) when the brass is in new form, and it's springback is still uniform full length of the necks.</p><p>You could run a reamer in them crooked holes, but this will likely create permanent runout.</p><p>You could try re-expansion & turning. </p><p>You might decide that it's not a problem worth pursuing, based on your seating depths. </p><p>Or, just start over with new brass and a better plan.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 591128, member: 1521"] What you have here is normal with FL sized -unturned necks. Reloading 101; Brass tapers in thickness from the webs all the way to the mouths. That means neck brass nearest the shoulders is thicker than neck brass nearest the mouths. When you FL sized the necks, you pushed the entire neck(thick and thin) inward, and for no good reason. Now, the neck ODs are somewhat uniform throughout their lengths, at the expense of tapering neck IDs(which will increase tension). It's actually a little late for that as the necks have taken a set by the FL sizing of them. Best to do it (expanding only, and to the turning mandrel) when the brass is in new form, and it's springback is still uniform full length of the necks. You could run a reamer in them crooked holes, but this will likely create permanent runout. You could try re-expansion & turning. You might decide that it's not a problem worth pursuing, based on your seating depths. Or, just start over with new brass and a better plan. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Brass neck getting thicker.
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