Quickload for.300WM

trapper10

Beginner
Jul 25, 2024
56
33
>300WM/ 24" barrel/ 180 Hornady SP Inter-loc/ case cap-92.93/ Powders- N560, Ramshot Grand, H1000. Thanks!
 
Cartridge : .300 Win. Mag.(@)
Bullet : .308, 180, Hornady SP 3070
Useable Case Capaci: 83.130 grain H2O = 5.398 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Vihtavuori N560 *C

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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

-20.0 81 63.20 2462 2422 31621 10838 88.1 1.558
-18.0 83 64.78 2526 2550 33810 11214 89.5 1.518
-16.0 85 66.36 2591 2683 36153 11581 90.9 1.478
-14.0 87 67.94 2656 2819 38663 11935 92.2 1.434
-12.0 89 69.52 2721 2960 41353 12275 93.4 1.388
-10.0 91 71.10 2787 3103 44238 12600 94.5 1.345
-08.0 93 72.68 2852 3251 47336 12907 95.5 1.302
-06.0 95 74.26 2917 3402 50662 13196 96.4 1.262
-04.0 97 75.84 2983 3556 54235 13465 97.3 1.223 ! Near Maximum !
-02.0 99 77.42 3048 3713 58044 13712 98.0 1.185 ! Near Maximum !
+00.0 101 79.00 3113 3874 62115 13935 98.6 1.149 !DANGEROUS LOAD-DO NOT USE!
+02.0 103 80.58 3178 4037 66481 14134 99.1 1.114 !DANGEROUS LOAD-DO NOT USE!
+04.0 105 82.16 3243 4203 71169 14307 99.5 1.080 !DANGEROUS LOAD-DO NOT USE!
+06.0 107 83.74 3307 4372 76207 14452 99.8 1.047 !DANGEROUS LOAD-DO NOT USE!
+08.0 109 85.32 3371 4543 81628 14568 99.9 1.016 !DANGEROUS LOAD-DO NOT USE!
+10.0 111 86.90 3435 4716 87470 14655 100.0 0.986 !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 101 79.00 3266 4263 75246 13582 100.0 1.059 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 79.00 2904 3371 49649 13490 92.4 1.267
 
Cartridge : .300 Win. Mag.(@)
Bullet : .308, 180, Hornady SP 3070
Useable Case Capaci: 83.130 grain H2O = 5.398 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon H1000 *T

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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

-20.0 88 66.72 2387 2278 30015 10220 87.1 1.579
-18.0 90 68.39 2454 2408 32198 10606 88.8 1.535
-16.0 92 70.06 2523 2543 34555 10978 90.5 1.491
-14.0 95 71.72 2591 2684 37099 11335 92.0 1.447
-12.0 97 73.39 2661 2830 39858 11674 93.4 1.399
-10.0 99 75.06 2731 2980 42841 11992 94.7 1.350
-08.0 101 76.73 2801 3136 46079 12287 95.8 1.304
-06.0 103 78.40 2872 3296 49596 12556 96.9 1.259
-04.0 106 80.06 2942 3460 53422 12797 97.8 1.216 ! Near Maximum !
-02.0 108 81.73 3013 3629 57594 13007 98.5 1.174 ! Near Maximum !
+00.0 110 83.40 3084 3802 62153 13184 99.1 1.134 !DANGEROUS LOAD-DO NOT USE!
+02.0 112 85.07 3155 3980 67142 13327 99.6 1.095 !DANGEROUS LOAD-DO NOT USE!
+04.0 114 86.74 3226 4161 72620 13432 99.9 1.057 !DANGEROUS LOAD-DO NOT USE!
+06.0 117 88.40 3297 4345 78646 13498 100.0 1.020 !DANGEROUS LOAD-DO NOT USE!
+08.0 119 90.07 3368 4533 85302 13530 100.0 0.985 !DANGEROUS LOAD-DO NOT USE!
+10.0 121 91.74 3438 4724 92670 13553 100.0 0.950 !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 110 83.40 3242 4200 76021 12690 100.0 1.043 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 110 83.40 2862 3274 50213 12811 92.7 1.251
 
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