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Rifles, Reloading, Optics, Equipment
Reloading
378 weatherby velocity ?
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<blockquote data-quote="340Shooter" data-source="post: 700969" data-attributes="member: 8589"><p>QL shows it gets pretty close with 7828...</p><p> </p><p>Cartridge : .378 Weath. Mag.</p><p>Bullet : .375, 300, Nosler AccuBond 53662</p><p>Useable Case Capaci: 115.859 grain H2O = 7.523 cm³</p><p>Cartridge O.A.L. L6: 3.655 inch = 92.84 mm</p><p>Barrel Length : 26.0 inch = 660.4 mm</p><p>Powder : IMR 7828</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>Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time</p><p> % % Grains fps ft.lbs psi psi % ms</p><p>-20.0 84 86.80 2376 3762 32105 9590 92.0 1.686</p><p>-18.0 86 88.97 2437 3956 34312 9888 93.2 1.642</p><p>-16.0 88 91.14 2498 4156 36677 10173 94.4 1.599</p><p>-14.0 90 93.31 2559 4361 39208 10443 95.4 1.549</p><p>-12.0 92 95.48 2619 4570 41919 10698 96.4 1.501</p><p>-10.0 94 97.65 2680 4785 44828 10934 97.2 1.454</p><p>-08.0 96 99.82 2741 5003 47949 11153 98.0 1.409</p><p>-06.0 98 101.99 2801 5226 51300 11351 98.6 1.365</p><p>-04.0 100 104.16 2861 5454 54907 11527 99.1 1.324 ! Near Maximum !</p><p>-02.0 102 106.33 2921 5684 58772 11682 99.5 1.283 ! Near Maximum !</p><p>+00.0 105 108.50 2981 5919 62967 11812 99.8 1.245 ! Near Maximum !</p><p>+02.0 107 110.67 3040 6156 67477 11918 99.9 1.207 !DANGEROUS LOAD-DO NOT USE!</p><p>+04.0 109 112.84 3099 6397 72351 11999 100.0 1.171 !DANGEROUS LOAD-DO NOT USE!</p><p>+06.0 111 115.01 3157 6640 77625 12065 100.0 1.136 !DANGEROUS LOAD-DO NOT USE!</p><p>+08.0 113 117.18 3215 6885 83313 12127 100.0 1.102 !DANGEROUS LOAD-DO NOT USE!</p><p>+10.0 115 119.35 3273 7134 89454 12184 100.0 1.070 !DANGEROUS LOAD-DO NOT USE!</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 105 108.50 3105 6424 76534 11308 100.0 1.152 !DANGEROUS LOAD-DO NOT USE!</p><p>Data for burning rate decreased by 10% relative to nominal value:</p><p>-Ba 105 108.50 2798 5216 50813 11784 95.5 1.366</p></blockquote><p></p>
[QUOTE="340Shooter, post: 700969, member: 8589"] QL shows it gets pretty close with 7828... Cartridge : .378 Weath. Mag. Bullet : .375, 300, Nosler AccuBond 53662 Useable Case Capaci: 115.859 grain H2O = 7.523 cm³ Cartridge O.A.L. L6: 3.655 inch = 92.84 mm Barrel Length : 26.0 inch = 660.4 mm Powder : IMR 7828 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 84 86.80 2376 3762 32105 9590 92.0 1.686 -18.0 86 88.97 2437 3956 34312 9888 93.2 1.642 -16.0 88 91.14 2498 4156 36677 10173 94.4 1.599 -14.0 90 93.31 2559 4361 39208 10443 95.4 1.549 -12.0 92 95.48 2619 4570 41919 10698 96.4 1.501 -10.0 94 97.65 2680 4785 44828 10934 97.2 1.454 -08.0 96 99.82 2741 5003 47949 11153 98.0 1.409 -06.0 98 101.99 2801 5226 51300 11351 98.6 1.365 -04.0 100 104.16 2861 5454 54907 11527 99.1 1.324 ! Near Maximum ! -02.0 102 106.33 2921 5684 58772 11682 99.5 1.283 ! Near Maximum ! +00.0 105 108.50 2981 5919 62967 11812 99.8 1.245 ! Near Maximum ! +02.0 107 110.67 3040 6156 67477 11918 99.9 1.207 !DANGEROUS LOAD-DO NOT USE! +04.0 109 112.84 3099 6397 72351 11999 100.0 1.171 !DANGEROUS LOAD-DO NOT USE! +06.0 111 115.01 3157 6640 77625 12065 100.0 1.136 !DANGEROUS LOAD-DO NOT USE! +08.0 113 117.18 3215 6885 83313 12127 100.0 1.102 !DANGEROUS LOAD-DO NOT USE! +10.0 115 119.35 3273 7134 89454 12184 100.0 1.070 !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 105 108.50 3105 6424 76534 11308 100.0 1.152 !DANGEROUS LOAD-DO NOT USE! Data for burning rate decreased by 10% relative to nominal value: -Ba 105 108.50 2798 5216 50813 11784 95.5 1.366 [/QUOTE]
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378 weatherby velocity ?
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