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Rifles, Reloading, Optics, Equipment
Reloading
RL26 and 6.5 Creedmoor
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<blockquote data-quote="Bowfishn" data-source="post: 1743266" data-attributes="member: 56875"><p>I believe you will run into a problem with case fill before you get to max load.</p><p>Magnum primers increase pressure about the same as 1/2 grain of powder from the testing I had done with RL26 in the 6.5 CM. </p><p></p><p>Cartridge : 6.5 Creedmoor Hornady</p><p>Bullet : .264, 127, Barnes 'LRX'BT 26403</p><p>Useable Case Capaci: 44.660 grain H2O = 2.900 cm³</p><p>Cartridge O.A.L. L6: 2.730 inch = 69.34 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 0.417% 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>-04.2 104 46.00 2866 2316 48861 10499 98.8 1.248</p><p>-03.8 104 46.20 2880 2340 49646 10529 98.9 1.239</p><p>-03.3 105 46.40 2895 2363 50446 10559 99.1 1.230</p><p>-02.9 105 46.60 2909 2387 51261 10587 99.2 1.221</p><p>-02.5 106 46.80 2924 2411 52089 10614 99.3 1.212</p><p>-02.1 106 47.00 2939 2435 52942 10639 99.4 1.203</p><p>-01.7 107 47.20 2953 2459 53807 10663 99.5 1.194 ! Near Maximum !</p><p>-01.3 107 47.40 2968 2483 54689 10685 99.6 1.185 ! Near Maximum !</p><p>-00.8 108 47.60 2982 2508 55590 10706 99.6 1.176 ! Near Maximum !</p><p>-00.4 108 47.80 2997 2532 56509 10726 99.7 1.168 ! Near Maximum !</p><p>+00.0 108 48.00 3011 2557 57448 10744 99.8 1.159 ! Near Maximum !</p><p>+00.4 109 48.20 3026 2582 58385 10761 99.8 1.150 ! Near Maximum !</p><p>+00.8 109 48.40 3040 2606 59381 10776 99.9 1.142 ! Near Maximum !</p><p>+01.3 110 48.60 3055 2631 60379 10789 99.9 1.133 ! Near Maximum !</p><p>+01.7 110 48.80 3069 2656 61398 10802 100.0 1.125 ! Near Maximum !</p><p>+02.1 111 49.00 3084 2681 62438 10812 100.0 1.117 !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 108 48.00 3172 2838 72571 10171 100.0 1.057 !DANGEROUS LOAD-DO NOT USE!</p><p>Data for burning rate decreased by 10% relative to nominal value:</p><p>-Ba 108 48.00 2770 2164 45315 10631 93.9 1.292</p></blockquote><p></p>
[QUOTE="Bowfishn, post: 1743266, member: 56875"] I believe you will run into a problem with case fill before you get to max load. Magnum primers increase pressure about the same as 1/2 grain of powder from the testing I had done with RL26 in the 6.5 CM. Cartridge : 6.5 Creedmoor Hornady Bullet : .264, 127, Barnes 'LRX'BT 26403 Useable Case Capaci: 44.660 grain H2O = 2.900 cm³ Cartridge O.A.L. L6: 2.730 inch = 69.34 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 0.417% 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 -04.2 104 46.00 2866 2316 48861 10499 98.8 1.248 -03.8 104 46.20 2880 2340 49646 10529 98.9 1.239 -03.3 105 46.40 2895 2363 50446 10559 99.1 1.230 -02.9 105 46.60 2909 2387 51261 10587 99.2 1.221 -02.5 106 46.80 2924 2411 52089 10614 99.3 1.212 -02.1 106 47.00 2939 2435 52942 10639 99.4 1.203 -01.7 107 47.20 2953 2459 53807 10663 99.5 1.194 ! Near Maximum ! -01.3 107 47.40 2968 2483 54689 10685 99.6 1.185 ! Near Maximum ! -00.8 108 47.60 2982 2508 55590 10706 99.6 1.176 ! Near Maximum ! -00.4 108 47.80 2997 2532 56509 10726 99.7 1.168 ! Near Maximum ! +00.0 108 48.00 3011 2557 57448 10744 99.8 1.159 ! Near Maximum ! +00.4 109 48.20 3026 2582 58385 10761 99.8 1.150 ! Near Maximum ! +00.8 109 48.40 3040 2606 59381 10776 99.9 1.142 ! Near Maximum ! +01.3 110 48.60 3055 2631 60379 10789 99.9 1.133 ! Near Maximum ! +01.7 110 48.80 3069 2656 61398 10802 100.0 1.125 ! Near Maximum ! +02.1 111 49.00 3084 2681 62438 10812 100.0 1.117 !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 108 48.00 3172 2838 72571 10171 100.0 1.057 !DANGEROUS LOAD-DO NOT USE! Data for burning rate decreased by 10% relative to nominal value: -Ba 108 48.00 2770 2164 45315 10631 93.9 1.292 [/QUOTE]
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Reloading
RL26 and 6.5 Creedmoor
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