Cartridge : .243 Win.
Bullet : .243, 75, Sierra HP 1510
Useable Case Capaci: 52.253 grain H2O = 3.393 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 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 1.0% 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 42.84 2993 1492 42515 10933 96.4 1.180
-09.0 94 43.32 3026 1525 43966 11046 96.8 1.162
-08.0 95 43.79 3059 1559 45466 11154 97.2 1.144
-07.0 96 44.27 3092 1593 47015 11258 97.6 1.126
-06.0 97 44.74 3126 1627 48616 11356 98.0 1.109
-05.0 98 45.22 3159 1661 50270 11449 98.3 1.092
-04.0 99 45.70 3191 1696 51980 11536 98.6 1.076 ! Near Maximum !
-03.0 100 46.17 3224 1731 53746 11618 98.9 1.059 ! Near Maximum !
-02.0 101 46.65 3257 1766 55573 11694 99.2 1.043 ! Near Maximum !
-01.0 102 47.12 3289 1802 57461 11764 99.4 1.028 ! Near Maximum !
+00.0 103 47.60 3322 1837 59412 11829 99.6 1.012 ! Near Maximum !
+01.0 104 48.08 3354 1873 61431 11887 99.7 0.997 !DANGEROUS LOAD-DO NOT USE!
+02.0 105 48.55 3386 1909 63518 11939 99.8 0.982 !DANGEROUS LOAD-DO NOT USE!
+03.0 106 49.03 3418 1945 65677 11985 99.9 0.968 !DANGEROUS LOAD-DO NOT USE!
+04.0 107 49.50 3449 1981 67911 12024 100.0 0.953 !DANGEROUS LOAD-DO NOT USE!
+05.0 108 49.98 3481 2018 70223 12057 100.0 0.939 !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 47.60 3468 2003 71200 11430 100.0 0.934 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 103 47.60 3114 1615 47850 11665 94.9 1.116
