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Cartridge : 6.5 -300 Wby. Mag.
Bullet : .264, 143, Hornady ELD-X 2635 G7
Useable Case Capaci: 89.247 grain H2O = 5.795 cm³
Cartridge O.A.L. L6: 3.560 inch = 90.42 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Hodgdon 50BMG
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 93 77.49 2856 2589 45157 15039 87.5 1.517
-09.0 94 78.35 2893 2657 46763 15275 88.3 1.491
-08.0 95 79.21 2930 2725 48428 15507 89.0 1.466
-07.0 96 80.07 2967 2794 50154 15737 89.7 1.441
-06.0 97 80.93 3004 2865 51944 15962 90.3 1.417
-05.0 98 81.80 3041 2937 53802 16183 91.0 1.392
-04.0 99 82.66 3079 3010 55729 16400 91.6 1.369 ! Near Maximum !
-03.0 100 83.52 3116 3084 57730 16612 92.3 1.346 ! Near Maximum !
-02.0 101 84.38 3154 3159 59806 16819 92.9 1.323 ! Near Maximum !
-01.0 102 85.24 3192 3235 61963 17021 93.5 1.301 ! Near Maximum !
+00.0 103 86.10 3230 3313 64203 17217 94.0 1.279 ! Near Maximum !
+01.0 104 86.96 3268 3391 66530 17407 94.6 1.258 !DANGEROUS LOAD-DO NOT USE!
+02.0 105 87.82 3306 3471 68949 17592 95.1 1.236 !DANGEROUS LOAD-DO NOT USE!
+03.0 106 88.68 3345 3552 71465 17769 95.6 1.216 !DANGEROUS LOAD-DO NOT USE!
+04.0 107 89.54 3383 3634 74081 17940 96.0 1.195 !DANGEROUS LOAD-DO NOT USE!
+05.0 108 90.41 3422 3717 76804 18104 96.5 1.175 !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 103 86.10 3422 3717 77174 17620 98.8 1.174 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 103 86.10 2991 2840 51693 16004 85.5 1.415