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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Which one ?
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<blockquote data-quote="Deleted member 46119" data-source="post: 1086828"><p>QL is not perfect and there would still be a lot of adjustments if it were my own but....</p><p></p><p>Cartridge : .280 Ack Imp</p><p>Bullet : .284, 150, Nosler Accubond LR 58734 G7</p><p>Useable Case Capaci: 67.917 grain H2O = 4.410 cm³</p><p>Cartridge O.A.L. L6: 3.495 inch = 88.77 mm</p><p>Barrel Length : 24.0 inch = 609.6 mm</p><p>Powder : Alliant Reloder-26</p><p></p><p>Predicted data by increasing and decreasing the given charge,</p><p>incremented in steps of 1.575% 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>-15.8 79 53.50 2451 2000 28920 10930 93.8 1.591</p><p>-14.2 81 54.50 2501 2084 30477 11189 94.9 1.560</p><p>-12.6 82 55.50 2552 2169 32129 11435 95.8 1.529</p><p>-11.0 84 56.50 2603 2256 33876 11667 96.7 1.498</p><p>-09.5 85 57.50 2654 2345 35727 11884 97.4 1.469</p><p>-07.9 87 58.50 2704 2436 37690 12085 98.1 1.436</p><p>-06.3 88 59.50 2755 2528 39772 12269 98.7 1.400</p><p>-04.7 90 60.50 2806 2622 41981 12435 99.1 1.364</p><p>-03.2 91 61.50 2856 2717 44328 12583 99.5 1.330</p><p>-01.6 93 62.50 2906 2813 46821 12711 99.8 1.296</p><p>+00.0 94 63.50 2956 2911 49470 12818 99.9 1.264</p><p>+01.6 96 64.50 3006 3009 52291 12905 100.0 1.232</p><p>+03.2 97 65.50 3055 3108 55294 12977 100.0 1.201 ! Near Maximum !</p><p>+04.7 99 66.50 3103 3208 58494 13047 100.0 1.171 ! Near Maximum !</p><p>+06.3 100 67.50 3152 3309 61898 13114 100.0 1.142 ! Near Maximum !</p><p>+07.9 102 68.50 3200 3411 65498 13178 100.0 1.114 !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 94 63.50 3110 3222 62572 12249 100.0 1.150 ! Near Maximum !</p><p>Data for burning rate decreased by 10% relative to nominal value:</p><p>-Ba 94 63.50 2727 2478 38522 12699 94.9 1.412</p><p></p><p>If you have no shiny spots, primers are still "rounded" etc...</p><p>I would believe you are good.</p><p></p><p>No one can say for sure as it's up to you but all indications are ok.</p></blockquote><p></p>
[QUOTE="Deleted member 46119, post: 1086828"] QL is not perfect and there would still be a lot of adjustments if it were my own but.... Cartridge : .280 Ack Imp Bullet : .284, 150, Nosler Accubond LR 58734 G7 Useable Case Capaci: 67.917 grain H2O = 4.410 cm³ Cartridge O.A.L. L6: 3.495 inch = 88.77 mm Barrel Length : 24.0 inch = 609.6 mm Powder : Alliant Reloder-26 Predicted data by increasing and decreasing the given charge, incremented in steps of 1.575% 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 -15.8 79 53.50 2451 2000 28920 10930 93.8 1.591 -14.2 81 54.50 2501 2084 30477 11189 94.9 1.560 -12.6 82 55.50 2552 2169 32129 11435 95.8 1.529 -11.0 84 56.50 2603 2256 33876 11667 96.7 1.498 -09.5 85 57.50 2654 2345 35727 11884 97.4 1.469 -07.9 87 58.50 2704 2436 37690 12085 98.1 1.436 -06.3 88 59.50 2755 2528 39772 12269 98.7 1.400 -04.7 90 60.50 2806 2622 41981 12435 99.1 1.364 -03.2 91 61.50 2856 2717 44328 12583 99.5 1.330 -01.6 93 62.50 2906 2813 46821 12711 99.8 1.296 +00.0 94 63.50 2956 2911 49470 12818 99.9 1.264 +01.6 96 64.50 3006 3009 52291 12905 100.0 1.232 +03.2 97 65.50 3055 3108 55294 12977 100.0 1.201 ! Near Maximum ! +04.7 99 66.50 3103 3208 58494 13047 100.0 1.171 ! Near Maximum ! +06.3 100 67.50 3152 3309 61898 13114 100.0 1.142 ! Near Maximum ! +07.9 102 68.50 3200 3411 65498 13178 100.0 1.114 !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 94 63.50 3110 3222 62572 12249 100.0 1.150 ! Near Maximum ! Data for burning rate decreased by 10% relative to nominal value: -Ba 94 63.50 2727 2478 38522 12699 94.9 1.412 If you have no shiny spots, primers are still "rounded" etc... I would believe you are good. No one can say for sure as it's up to you but all indications are ok. [/QUOTE]
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