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Rifles, Reloading, Optics, Equipment
Reloading
Neck Sizing Vs. Full Length Sizing and Neck Tension
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<blockquote data-quote="SSG Graybush" data-source="post: 2872519" data-attributes="member: 115190"><p>7mag, Norma brass, 68.8 grs of H1000, cci 250 with a 180 vld-h at 2917 fps from a 26" barrel. Not real hot, not minimum either. bumping shoulders ~2-4 thou. I can slightly feel case when closing bolt. That last inch of closure on some more then others. I just read that can cause a harmonic issue, but it shoots .44 consistently. It's a OMR CF remage barrel, Headspace I set tight, I believe. I ran barrel down on go gauge tight, checked with 5 peices of same lot brass which chambered fine, rechecked with go and no go and went with it. I got 250 pc of same lot brass for this rifles. Using a .420 comparator virgin brass is 2.101". Loaded rounds are 2.114",+ - 1 thou. Lee manual says .420 datum line should be 2.116". So I guess it's chambered pretty well. Am very happy with the barrel and would buy another from OMR.</p><p>I stated 15+, but I actually retired the brass at 15 firings. But those cases were fine. A couple primer pockets were getting not as snug as others so I figured, retire that "lot". But I couldn't see or feel any indication of head separation.</p></blockquote><p></p>
[QUOTE="SSG Graybush, post: 2872519, member: 115190"] 7mag, Norma brass, 68.8 grs of H1000, cci 250 with a 180 vld-h at 2917 fps from a 26" barrel. Not real hot, not minimum either. bumping shoulders ~2-4 thou. I can slightly feel case when closing bolt. That last inch of closure on some more then others. I just read that can cause a harmonic issue, but it shoots .44 consistently. It's a OMR CF remage barrel, Headspace I set tight, I believe. I ran barrel down on go gauge tight, checked with 5 peices of same lot brass which chambered fine, rechecked with go and no go and went with it. I got 250 pc of same lot brass for this rifles. Using a .420 comparator virgin brass is 2.101". Loaded rounds are 2.114",+ - 1 thou. Lee manual says .420 datum line should be 2.116". So I guess it's chambered pretty well. Am very happy with the barrel and would buy another from OMR. I stated 15+, but I actually retired the brass at 15 firings. But those cases were fine. A couple primer pockets were getting not as snug as others so I figured, retire that "lot". But I couldn't see or feel any indication of head separation. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Neck Sizing Vs. Full Length Sizing and Neck Tension
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