6.5-300WBY Quick Load H50BMG

Slimfinn

Handloader
Nov 28, 2018
870
669
Just looking to see the the % burn loading 50bmg, 143gr ELDX in a 26" barrel COL 3.59"
 
Code:
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
 
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