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Rifles, Reloading, Optics, Equipment
Reloading
Head space getting longer
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<blockquote data-quote="bigedp51" data-source="post: 1436327" data-attributes="member: 28965"><p>The Redding competition shell holders will make the problem worse. These Redding shell holders will push the case from .002 to .010 "LESS" into the die. These shell holders are designed for dies that will push the case shoulder back excessively with press cam over.</p><p></p><p>Example with the standard RCBS shell holder with a deck hight of .125 and my RCBS .223 die it will bump the shoulder back .007. But with the +.004 Redding competition shell holder and press cam over the case shoulder is only bumped back .003 for my AR15.</p><p></p><p>Bottom line, if the case shoulder is not being bumped back far enough you lap the top of the shell holder. And this pushes the case further into the die for more shoulder bump. "BUT" if the shoulder is being pushed back too far you use the Redding competition shell holders and still have press cam over.</p><p></p><p>Also if you pause at the top of the ram stroke for 4 to 5 seconds this greatly reduces brass spring back. And if you use a expander die the neck of the case will be expanded on the upstroke of the ram and not "pull" the cases longer.</p><p></p><p>Below is a Lyman type M expander that I use on my Lake City 5.56 cases for my AR15 rifles. I do not anneal these cases but I do lube the inside of the case neck with powdered graphite.</p><p></p><p><img src="https://i.imgur.com/ohIUcpd.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>NOTE, I buy bulk once fired Lake City 5.56 and 7.62 cases and size then the first time with a small base die. Then thereafter I size them with a standard die and never have a problem with shoulder location.</p></blockquote><p></p>
[QUOTE="bigedp51, post: 1436327, member: 28965"] The Redding competition shell holders will make the problem worse. These Redding shell holders will push the case from .002 to .010 "LESS" into the die. These shell holders are designed for dies that will push the case shoulder back excessively with press cam over. Example with the standard RCBS shell holder with a deck hight of .125 and my RCBS .223 die it will bump the shoulder back .007. But with the +.004 Redding competition shell holder and press cam over the case shoulder is only bumped back .003 for my AR15. Bottom line, if the case shoulder is not being bumped back far enough you lap the top of the shell holder. And this pushes the case further into the die for more shoulder bump. "BUT" if the shoulder is being pushed back too far you use the Redding competition shell holders and still have press cam over. Also if you pause at the top of the ram stroke for 4 to 5 seconds this greatly reduces brass spring back. And if you use a expander die the neck of the case will be expanded on the upstroke of the ram and not "pull" the cases longer. Below is a Lyman type M expander that I use on my Lake City 5.56 cases for my AR15 rifles. I do not anneal these cases but I do lube the inside of the case neck with powdered graphite. [img]https://i.imgur.com/ohIUcpd.png[/img] NOTE, I buy bulk once fired Lake City 5.56 and 7.62 cases and size then the first time with a small base die. Then thereafter I size them with a standard die and never have a problem with shoulder location. [/QUOTE]
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Head space getting longer
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