Cartridge : .243 Win.
Bullet : .243, 85, Sierra HPBT 1530
Useable Case Capaci: 50.394 grain H2O = 3.272 cm³
Cartridge O.A.L. L6: 2.650 inch = 67.31 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : IMR 4064
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 82 36.00 2839 1522 43995 10063 98.4 1.197
-09.0 83 36.40 2866 1551 45279 10154 98.6 1.181
-08.0 84 36.80 2894 1580 46597 10241 98.9 1.165
-07.0 85 37.20 2921 1610 47949 10325 99.1 1.150
-06.0 86 37.60 2947 1640 49337 10405 99.3 1.134
-05.0 87 38.00 2974 1669 50761 10482 99.4 1.120
-04.0 88 38.40 3001 1699 52222 10555 99.6 1.105 ! Near Maximum !
-03.0 88 38.80 3027 1729 53721 10624 99.7 1.091 ! Near Maximum !
-02.0 89 39.20 3053 1759 55260 10689 99.8 1.077 ! Near Maximum !
-01.0 90 39.60 3079 1790 56839 10750 99.9 1.063 ! Near Maximum !
+00.0 91 40.00 3105 1820 58459 10807 99.9 1.050 ! Near Maximum !
+01.0 92 40.40 3131 1850 60123 10860 100.0 1.037 !DANGEROUS LOAD-DO NOT USE!
+02.0 93 40.80 3157 1881 61831 10909 100.0 1.024 !DANGEROUS LOAD-DO NOT USE!
+03.0 94 41.20 3182 1911 63584 10955 100.0 1.011 !DANGEROUS LOAD-DO NOT USE!
+04.0 95 41.60 3207 1942 65383 11000 100.0 0.998 !DANGEROUS LOAD-DO NOT USE!
+05.0 96 42.00 3232 1972 67231 11045 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 91 40.00 3208 1942 67546 10473 100.0 0.984 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 91 40.00 2957 1650 49314 10845 97.2 1.137
