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Rifles, Reloading, Optics, Equipment
Reloading
7WSM with H4831SC & H1000 & Retumbo
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<blockquote data-quote="jmason" data-source="post: 282422" data-attributes="member: 10486"><p>Cartridge : 7 mm WSM</p><p>Bullet : .284, 180, Berger VLD</p><p>Cartridge O.A.L. L6: 2.860 inch or 72.64 mm</p><p>Barrel Length : 26.0 inch or 660.4 mm</p><p>Powder : Hodgdon H4831 SC</p><p></p><p>Predicted data by increasing and decreasing the given charge,</p><p>incremented in steps of 2.0% of nominal charge.</p><p>CAUTION: Figures exceed maximum and minimum recommended loads !</p><p></p><p>Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time</p><p> % % Grains fps ft.lbs psi psi % ms</p><p></p><p>-20.0 74 48.00 2213 1957 28483 8340 89.7 1.855</p><p>-18.0 75 49.20 2266 2052 30291 8610 90.9 1.808</p><p>-16.0 77 50.40 2319 2150 32214 8873 92.1 1.762</p><p>-14.0 79 51.60 2373 2250 34256 9129 93.1 1.718</p><p>-12.0 81 52.80 2426 2352 36427 9377 94.1 1.675</p><p>-10.0 83 54.00 2479 2457 38736 9616 95.0 1.628</p><p>-08.0 85 55.20 2533 2564 41191 9844 95.9 1.582</p><p>-06.0 86 56.40 2586 2673 43800 10062 96.7 1.537</p><p>-04.0 88 57.60 2640 2785 46551 10268 97.4 1.494</p><p>-02.0 90 58.80 2693 2898 49464 10462 98.0 1.452</p><p>+00.0 92 60.00 2746 3013 52560 10642 98.5 1.412</p><p>+02.0 94 61.20 2799 3130 55854 10808 99.0 1.374 ! Near Maximum !</p><p>+04.0 96 62.40 2851 3249 59359 10959 99.3 1.336 ! Near Maximum !</p><p>+06.0 97 63.60 2904 3370 63094 11094 99.6 1.300 ! Near Maximum !</p><p>+08.0 99 64.80 2956 3492 67075 11213 99.8 1.265 !DANGEROUS LOAD-DO NOT USE!</p><p>+10.0 101 66.00 3008 3615 71322 11314 100.0 1.231 !DANGEROUS LOAD-DO NOT USE!</p><p></p><p>Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge</p><p>Data for burning rate increased by 10% relative to nominal value:</p><p>+Ba 92 60.00 2867 3285 62255 10425 100.0 1.313 ! Near Maximum !</p><p>Data for burning rate decreased by 10% relative to nominal value:</p><p>-Ba 92 60.00 2582 2664 43094 10330 92.9 1.541</p></blockquote><p></p>
[QUOTE="jmason, post: 282422, member: 10486"] Cartridge : 7 mm WSM Bullet : .284, 180, Berger VLD Cartridge O.A.L. L6: 2.860 inch or 72.64 mm Barrel Length : 26.0 inch or 660.4 mm Powder : Hodgdon H4831 SC Predicted data by increasing and decreasing the given charge, incremented in steps of 2.0% of nominal charge. CAUTION: Figures exceed maximum and minimum recommended loads ! Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time % % Grains fps ft.lbs psi psi % ms -20.0 74 48.00 2213 1957 28483 8340 89.7 1.855 -18.0 75 49.20 2266 2052 30291 8610 90.9 1.808 -16.0 77 50.40 2319 2150 32214 8873 92.1 1.762 -14.0 79 51.60 2373 2250 34256 9129 93.1 1.718 -12.0 81 52.80 2426 2352 36427 9377 94.1 1.675 -10.0 83 54.00 2479 2457 38736 9616 95.0 1.628 -08.0 85 55.20 2533 2564 41191 9844 95.9 1.582 -06.0 86 56.40 2586 2673 43800 10062 96.7 1.537 -04.0 88 57.60 2640 2785 46551 10268 97.4 1.494 -02.0 90 58.80 2693 2898 49464 10462 98.0 1.452 +00.0 92 60.00 2746 3013 52560 10642 98.5 1.412 +02.0 94 61.20 2799 3130 55854 10808 99.0 1.374 ! Near Maximum ! +04.0 96 62.40 2851 3249 59359 10959 99.3 1.336 ! Near Maximum ! +06.0 97 63.60 2904 3370 63094 11094 99.6 1.300 ! Near Maximum ! +08.0 99 64.80 2956 3492 67075 11213 99.8 1.265 !DANGEROUS LOAD-DO NOT USE! +10.0 101 66.00 3008 3615 71322 11314 100.0 1.231 !DANGEROUS LOAD-DO NOT USE! Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge Data for burning rate increased by 10% relative to nominal value: +Ba 92 60.00 2867 3285 62255 10425 100.0 1.313 ! Near Maximum ! Data for burning rate decreased by 10% relative to nominal value: -Ba 92 60.00 2582 2664 43094 10330 92.9 1.541 [/QUOTE]
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7WSM with H4831SC & H1000 & Retumbo
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