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Cartridge : .243 Win.
Bullet : .243, 85, Sierra HPBT 1530
Useable Case Capaci: 49.964 grain H2O = 3.244 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : IMR 4350
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.197% 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
-12.0 85 38.73 2795 1474 39067 9106 93.1 1.326
-10.8 86 39.26 2831 1513 40534 9240 93.7 1.303
-09.6 87 39.78 2867 1551 42054 9371 94.3 1.281
-08.4 88 40.31 2903 1590 43629 9499 94.8 1.259
-07.2 89 40.84 2938 1629 45262 9622 95.4 1.238
-06.0 90 41.37 2974 1669 46954 9741 95.9 1.218
-04.8 91 41.89 3009 1709 48707 9856 96.4 1.198
-03.6 93 42.42 3045 1750 50525 9966 96.8 1.178
-02.4 94 42.95 3080 1791 52409 10071 97.3 1.159 ! Near Maximum !
-01.2 95 43.47 3116 1832 54363 10172 97.7 1.140 ! Near Maximum !
+00.0 96 44.00 3151 1874 56388 10268 98.0 1.121 ! Near Maximum !
+01.2 97 44.53 3186 1916 58489 10358 98.4 1.103 ! Near Maximum !
+02.4 98 45.05 3221 1958 60668 10443 98.7 1.086 !DANGEROUS LOAD-DO NOT USE!
+03.6 100 45.58 3255 2000 62929 10523 98.9 1.068 !DANGEROUS LOAD-DO NOT USE!
+04.8 101 46.11 3290 2043 65276 10597 99.2 1.051 !DANGEROUS LOAD-DO NOT USE!
+06.0 102 46.63 3325 2086 67711 10666 99.4 1.035 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba 96 44.00 3225 1963 61229 10258 99.5 1.081 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 96 44.00 3065 1774 51596 10160 95.6 1.167 ! Near Maximum !