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Rifles, Reloading, Optics, Equipment
Reloading
.223 AR Reloading Shoulder Setback
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<blockquote data-quote="243winxb" data-source="post: 1496900" data-attributes="member: 97793"><p>A standard RCBS Fl die will set the correct sizing in a single stage press.</p><p></p><p>I have found no need for small base dies loading for many 5.56/223 chambered guns. M16A1 to single shot Contenders.</p><p></p><p>Bump .003" But only after getting a correct head to datum measurement. This may take 3 firings of neck sized brass.</p><p></p><p>Or set the FL die with a gap of .010" between shell holder and FL die. See if empty sized brass will chamber. Adjust die as needed. </p><p></p><p>Don't trust a shell plate on a progressive press to give the same shoulder bump at each station.</p><p><strong>Each station of a progressive press may produce a different head to datum measurement on FL sizing, same die setting. A shell plate deck height problem. .125" is normal </strong></p></blockquote><p></p>
[QUOTE="243winxb, post: 1496900, member: 97793"] A standard RCBS Fl die will set the correct sizing in a single stage press. I have found no need for small base dies loading for many 5.56/223 chambered guns. M16A1 to single shot Contenders. Bump .003" But only after getting a correct head to datum measurement. This may take 3 firings of neck sized brass. Or set the FL die with a gap of .010" between shell holder and FL die. See if empty sized brass will chamber. Adjust die as needed. Don't trust a shell plate on a progressive press to give the same shoulder bump at each station. [B]Each station of a progressive press may produce a different head to datum measurement on FL sizing, same die setting. A shell plate deck height problem. .125" is normal [/B] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
.223 AR Reloading Shoulder Setback
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