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Rifles, Reloading, Optics, Equipment
Reloading
Maximum load for 7mm Rem Mag 160 gr Nosler Accubond
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<blockquote data-quote="Lefty7mmstw" data-source="post: 1083696" data-attributes="member: 48043"><p>The 7rem has a problem.... both with the variances out there in chamber dimensions and the fact that it was hobbled a bit in max pressure. <strong>Work up slowly going for BOOK VELOCITY OR SLIGHTLY LESS...</strong> At one time people went for broke with the 7rem and tried for 3400 fps with 140's and 3200 fps with 160's, but there are better cartridges to get you that speed now days and pushing the 7rem looks a bit foolish.</p><p>I'm not a fan of deviating from book data but 300 fps low is absurd; you either need to go up a grain or two or switch powders. Make sure you have no ejector marks or hard bolt lift on the finished load workup; any brass distress at all is high pressure... Usually at least 75 Kpsi.... Blown brass means you probably have an angel watching over you as you could have been hurt. </p><p>My current 7stw is 200+ fps low with one load but the barrel is a bit shorter too. I know where you are coming from on the low vel. thing.</p></blockquote><p></p>
[QUOTE="Lefty7mmstw, post: 1083696, member: 48043"] The 7rem has a problem.... both with the variances out there in chamber dimensions and the fact that it was hobbled a bit in max pressure. [B]Work up slowly going for BOOK VELOCITY OR SLIGHTLY LESS...[/B] At one time people went for broke with the 7rem and tried for 3400 fps with 140's and 3200 fps with 160's, but there are better cartridges to get you that speed now days and pushing the 7rem looks a bit foolish. I'm not a fan of deviating from book data but 300 fps low is absurd; you either need to go up a grain or two or switch powders. Make sure you have no ejector marks or hard bolt lift on the finished load workup; any brass distress at all is high pressure... Usually at least 75 Kpsi.... Blown brass means you probably have an angel watching over you as you could have been hurt. My current 7stw is 200+ fps low with one load but the barrel is a bit shorter too. I know where you are coming from on the low vel. thing. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Maximum load for 7mm Rem Mag 160 gr Nosler Accubond
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