I raised the Max PSI to 63K..
Here is RL26
Cartridge : 6.5 x 55 Swedish
Bullet : .264, 130, Swift Scirocco
Useable Case Capaci: 52.180 grain H2O = 3.388 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-26
Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.926% 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
-09.3 95 49.00 2746 2176 44649 12903 98.8 1.267
-08.3 96 49.50 2778 2227 46222 13005 99.0 1.246
-07.4 97 50.00 2809 2278 47857 13100 99.3 1.226
-06.5 98 50.50 2841 2330 49560 13187 99.5 1.206
-05.6 99 51.00 2873 2382 51332 13266 99.7 1.186
-04.6 100 51.50 2904 2435 53179 13336 99.8 1.167
-03.7 101 52.00 2936 2488 55103 13397 99.9 1.148 ! Near Maximum !
-02.8 102 52.50 2967 2541 57109 13449 100.0 1.129 ! Near Maximum !
-01.9 102 53.00 2998 2595 59200 13492 100.0 1.111 ! Near Maximum !
-00.9 103 53.50 3029 2649 61382 13531 100.0 1.093 ! Near Maximum !
+00.0 104 54.00 3060 2704 63660 13569 100.0 1.075 !DANGEROUS LOAD-DO NOT USE!
+00.9 105 54.50 3091 2759 66033 13605 100.0 1.057 !DANGEROUS LOAD-DO NOT USE!
+01.9 106 55.00 3122 2814 68520 13640 100.0 1.040 !DANGEROUS LOAD-DO NOT USE!
+02.8 107 55.50 3153 2870 71118 13674 100.0 1.023 !DANGEROUS LOAD-DO NOT USE!
+03.7 108 56.00 3184 2926 73826 13706 100.0 1.006 !DANGEROUS LOAD-DO NOT USE!
+04.6 109 56.50 3214 2982 76674 13737 100.0 0.990 !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 104 54.00 3202 2960 80806 12951 100.0 0.981 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 54.00 2841 2330 49321 13856 97.0 1.199
R19 and the other powders you mentioned. Hope this helps. RL26 was definitely the fastest in my rifle.
Cartridge : 6.5 x 55 Swedish
Bullet : .264, 130, Swift Scirocco
Useable Case Capaci: 52.180 grain H2O = 3.388 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-19
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.021% 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
-10.2 91 44.00 2598 1948 43170 11263 93.9 1.289
-09.2 93 44.50 2628 1993 44606 11409 94.4 1.269
-08.2 94 45.00 2658 2039 46078 11551 94.9 1.250
-07.1 95 45.50 2687 2085 47626 11690 95.4 1.231
-06.1 96 46.00 2717 2132 49210 11826 95.8 1.212
-05.1 97 46.50 2747 2179 50859 11957 96.2 1.193
-04.1 98 47.00 2777 2227 52562 12085 96.6 1.175
-03.1 99 47.50 2807 2275 54326 12209 97.0 1.157 ! Near Maximum !
-02.0 100 48.00 2837 2324 56153 12328 97.4 1.140 ! Near Maximum !
-01.0 101 48.50 2867 2373 58040 12443 97.7 1.123 ! Near Maximum !
+00.0 102 49.00 2897 2423 59988 12553 98.0 1.106 ! Near Maximum !
+01.0 103 49.50 2927 2473 61997 12659 98.3 1.089 ! Near Maximum !
+02.0 104 50.00 2957 2524 64075 12760 98.6 1.073 !DANGEROUS LOAD-DO NOT USE!
+03.1 105 50.50 2987 2575 66227 12856 98.9 1.057 !DANGEROUS LOAD-DO NOT USE!
+04.1 106 51.00 3017 2627 68457 12946 99.1 1.042 !DANGEROUS LOAD-DO NOT USE!
+05.1 107 51.50 3047 2679 70767 13032 99.3 1.026 !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 102 49.00 3033 2655 71477 12366 100.0 1.026 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 102 49.00 2716 2130 48979 12098 91.9 1.210
Cartridge : 6.5 x 55 Swedish
Bullet : .264, 130, Swift Scirocco
Useable Case Capaci: 52.180 grain H2O = 3.388 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H4831
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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
-10.0 96 45.00 2554 1883 42356 10882 90.8 1.297
-09.0 97 45.50 2584 1928 43796 11034 91.4 1.277
-08.0 98 46.00 2615 1973 45290 11184 91.9 1.257
-07.0 99 46.50 2645 2020 46842 11330 92.5 1.237
-06.0 101 47.00 2676 2067 48449 11474 93.0 1.217
-05.0 102 47.50 2707 2115 50119 11614 93.6 1.198
-04.0 103 48.00 2738 2164 51852 11751 94.1 1.179
-03.0 104 48.50 2769 2213 53652 11884 94.6 1.161 ! Near Maximum !
-02.0 105 49.00 2800 2263 55523 12014 95.1 1.143 ! Near Maximum !
-01.0 106 49.50 2831 2313 57467 12139 95.5 1.125 ! Near Maximum !
+00.0 107 50.00 2862 2364 59487 12261 95.9 1.107 ! Near Maximum !
+01.0 108 50.50 2893 2416 61588 12378 96.4 1.090 ! Near Maximum !
+02.0 109 51.00 2924 2469 63775 12491 96.8 1.072 !DANGEROUS LOAD-DO NOT USE!
+03.0 110 51.50 2956 2522 66053 12600 97.1 1.056 !DANGEROUS LOAD-DO NOT USE!
+04.0 111 52.00 2987 2576 68413 12703 97.5 1.039 !DANGEROUS LOAD-DO NOT USE!
+05.0 112 52.50 3019 2630 70892 12802 97.8 1.023 !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 107 50.00 3011 2617 71281 12330 99.6 1.025 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 107 50.00 2671 2059 48669 11597 88.5 1.212
Cartridge : 6.5 x 55 Swedish
Bullet : .264, 130, Swift Scirocco
Useable Case Capaci: 52.180 grain H2O = 3.388 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : IMR 4350
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.064% 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
-10.6 88 42.00 2574 1913 44781 10532 95.8 1.275
-09.6 89 42.50 2603 1956 46245 10660 96.2 1.256
-08.5 90 43.00 2632 2000 47755 10785 96.6 1.237
-07.4 91 43.50 2661 2044 49314 10907 97.0 1.218
-06.4 92 44.00 2690 2089 50923 11024 97.3 1.200
-05.3 93 44.50 2719 2134 52583 11139 97.7 1.182
-04.3 94 45.00 2748 2179 54298 11249 98.0 1.165 ! Near Maximum !
-03.2 95 45.50 2776 2225 56068 11355 98.3 1.148 ! Near Maximum !
-02.1 96 46.00 2805 2271 57896 11457 98.5 1.131 ! Near Maximum !
-01.1 97 46.50 2834 2318 59783 11554 98.8 1.114 ! Near Maximum !
+00.0 98 47.00 2862 2365 61733 11648 99.0 1.098 ! Near Maximum !
+01.1 99 47.50 2891 2412 63748 11737 99.2 1.082 !DANGEROUS LOAD-DO NOT USE!
+02.1 100 48.00 2919 2460 65830 11821 99.4 1.066 !DANGEROUS LOAD-DO NOT USE!
+03.2 101 48.50 2947 2508 67982 11900 99.5 1.051 !DANGEROUS LOAD-DO NOT USE!
+04.3 102 49.00 2976 2556 70207 11975 99.7 1.036 !DANGEROUS LOAD-DO NOT USE!
+05.3 103 49.50 3004 2605 72507 12044 99.8 1.021 !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 98 47.00 2975 2556 72174 11353 100.0 1.025 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 98 47.00 2707 2115 51454 11422 94.2 1.192
Cartridge : 6.5 x 55 Swedish
Bullet : .264, 130, Swift Scirocco
Useable Case Capaci: 52.180 grain H2O = 3.388 cm³
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : IMR 4831
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.064% 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
-10.6 91 42.00 2584 1927 43430 10735 98.6 1.312
-09.6 92 42.50 2613 1971 44909 10841 98.9 1.291
-08.5 93 43.00 2642 2015 46437 10941 99.1 1.271
-07.4 94 43.50 2671 2059 48015 11037 99.3 1.251
-06.4 96 44.00 2700 2104 49646 11127 99.5 1.231
-05.3 97 44.50 2729 2149 51332 11212 99.7 1.212
-04.3 98 45.00 2757 2195 53074 11291 99.8 1.193
-03.2 99 45.50 2786 2241 54874 11365 99.9 1.175 ! Near Maximum !
-02.1 100 46.00 2814 2287 56735 11433 100.0 1.157 ! Near Maximum !
-01.1 101 46.50 2843 2333 58660 11495 100.0 1.139 ! Near Maximum !
+00.0 102 47.00 2871 2379 60650 11552 100.0 1.122 ! Near Maximum !
+01.1 103 47.50 2899 2426 62708 11606 100.0 1.105 !DANGEROUS LOAD-DO NOT USE!
+02.1 104 48.00 2927 2473 64837 11659 100.0 1.088 !DANGEROUS LOAD-DO NOT USE!
+03.2 105 48.50 2955 2520 67040 11711 100.0 1.072 !DANGEROUS LOAD-DO NOT USE!
+04.3 106 49.00 2982 2568 69320 11762 100.0 1.056 !DANGEROUS LOAD-DO NOT USE!
+05.3 107 49.50 3010 2615 71681 11812 100.0 1.040 !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 102 47.00 2977 2557 72334 11114 100.0 1.041 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 102 47.00 2713 2125 49126 11731 97.4 1.230
