QL request please .243

DrMike

Ballistician
Nov 8, 2006
34,708
784
I note this is your first post. Welcome aboard. May I invite you to give us an introduction to yourself. Perhaps you would let us know what you are loading for, how long you've been loading, and what your favourite hunts have been. The information you requested is given in the following.

Cartridge : .243 Win.
Bullet : .243, 85, Sierra SP 1520
Useable Case Capaci: 51.137 grain H2O = 3.320 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
Barrel Length : 16.0 inch = 406.4 mm
Powder : Hodgdon H4350 *T

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 88 40.68 2543 1221 42695 14482 89.2 1.027
-09.0 89 41.13 2572 1249 44034 14695 89.8 1.012
-08.0 90 41.58 2602 1277 45414 14905 90.4 0.997
-07.0 91 42.04 2631 1306 46835 15112 91.0 0.982
-06.0 92 42.49 2660 1336 48300 15317 91.6 0.967
-05.0 93 42.94 2690 1366 49809 15517 92.2 0.953
-04.0 94 43.39 2719 1396 51364 15715 92.8 0.939 ! Near Maximum !
-03.0 95 43.84 2749 1426 52967 15908 93.3 0.925 ! Near Maximum !
-02.0 96 44.30 2778 1457 54618 16098 93.8 0.912 ! Near Maximum !
-01.0 97 44.75 2808 1488 56321 16283 94.3 0.899 ! Near Maximum !
+00.0 98 45.20 2838 1520 58076 16464 94.8 0.886 ! Near Maximum !
+01.0 99 45.65 2867 1552 59885 16641 95.3 0.873 !DANGEROUS LOAD-DO NOT USE!
+02.0 100 46.10 2897 1584 61751 16813 95.7 0.860 !DANGEROUS LOAD-DO NOT USE!
+03.0 101 46.56 2926 1616 63675 16980 96.1 0.848 !DANGEROUS LOAD-DO NOT USE!
+04.0 102 47.01 2956 1649 65660 17142 96.5 0.835 !DANGEROUS LOAD-DO NOT USE!
+05.0 103 47.46 2986 1683 67707 17298 96.9 0.823 !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 45.20 2986 1683 67996 16820 99.0 0.821 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 98 45.20 2653 1328 48327 15426 87.2 0.968
 
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