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Rifles, Reloading, Optics, Equipment
Reloading
Full length sizing VS neck sizing
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<blockquote data-quote="Mikecr" data-source="post: 2565008" data-attributes="member: 1521"><p>I have not FL sized cases since my reloading class in 1975 (when I was 12yrs old).</p><p></p><p>If brass is new, there should be no reason to body size it until the brass is fire formed to stable -with your chamber.</p><p>It can take 3 shots to reach stable, I neck size only for this. Then you have a point of assessment and deliberate action. </p><p>Take a couple culled cases, that were fire formed with the rest, and see what your body sizing die (or your FL die) is doing to it.</p><p>Does it suit your sizing plan?</p><p></p><p>If not for me, this is where I send a few FF'd cases to a custom die maker, along with MY sizing plan. He can alter my die, maybe, or make one, I don't care. My sizing plan includes .001" shoulder bumping and .125" partial length neck sizing to .001" cal interference (base line).</p><p>A bushing approach for necks works really good here, as it provides local adjustment. My neck tension is adjusted through LENGTH of neck sizing. I use custom body dies for bumping (bump dies).</p><p>For this, the bump die supports the entire case body with a slight squeeze (within springback) while yielding shoulder only.</p><p></p><p>With this minimal sizing and conditions mentioned earlier, my cases last forever, with stable static/dynamic capacities.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 2565008, member: 1521"] I have not FL sized cases since my reloading class in 1975 (when I was 12yrs old). If brass is new, there should be no reason to body size it until the brass is fire formed to stable -with your chamber. It can take 3 shots to reach stable, I neck size only for this. Then you have a point of assessment and deliberate action. Take a couple culled cases, that were fire formed with the rest, and see what your body sizing die (or your FL die) is doing to it. Does it suit your sizing plan? If not for me, this is where I send a few FF'd cases to a custom die maker, along with MY sizing plan. He can alter my die, maybe, or make one, I don't care. My sizing plan includes .001" shoulder bumping and .125" partial length neck sizing to .001" cal interference (base line). A bushing approach for necks works really good here, as it provides local adjustment. My neck tension is adjusted through LENGTH of neck sizing. I use custom body dies for bumping (bump dies). For this, the bump die supports the entire case body with a slight squeeze (within springback) while yielding shoulder only. With this minimal sizing and conditions mentioned earlier, my cases last forever, with stable static/dynamic capacities. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Full length sizing VS neck sizing
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