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Rifles, Reloading, Optics, Equipment
Reloading
Pressure with Neck-Sized Brass but not Full Length Sized Brass?
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<blockquote data-quote="MSLRHunter" data-source="post: 722818" data-attributes="member: 20566"><p>Ok, here is a pic of a case head. The mark is on the ACK, and this is one of the worst ones. As far as measurements of the FL and NS cases go, they were trimmed to the same length, prepped the same, same bushing, the only difference is the FL cases have had the shoulder bumped back 0.002". NS cases measure 2.140, FL cases 2.138, and new cases 2.137 measured with a hornady headspace gauge. I went back and chambered some of the NS brass and it is pretty tight, hard to close the bolt. Of course, the new and FL cases chamber with no resistance. My theory is that with the NS cases that are a tight fit in the chamber combined with a near max load has nowhere to expand to, so it flows into the ejector hole? What do y'all think?</p><p></p><p>Also, it's harder than I thought it would be to take a pic of an ejector mark!</p></blockquote><p></p>
[QUOTE="MSLRHunter, post: 722818, member: 20566"] Ok, here is a pic of a case head. The mark is on the ACK, and this is one of the worst ones. As far as measurements of the FL and NS cases go, they were trimmed to the same length, prepped the same, same bushing, the only difference is the FL cases have had the shoulder bumped back 0.002". NS cases measure 2.140, FL cases 2.138, and new cases 2.137 measured with a hornady headspace gauge. I went back and chambered some of the NS brass and it is pretty tight, hard to close the bolt. Of course, the new and FL cases chamber with no resistance. My theory is that with the NS cases that are a tight fit in the chamber combined with a near max load has nowhere to expand to, so it flows into the ejector hole? What do y'all think? Also, it's harder than I thought it would be to take a pic of an ejector mark! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Pressure with Neck-Sized Brass but not Full Length Sized Brass?
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