Cartridge : .243 Win.
Bullet : .243, 85, Sierra HPBT 1530
Useable Case Capaci: 50.390 grain H2O = 3.272 cm³
Cartridge O.A.L. L6: 2.650 inch = 67.31 mm
Barrel Length : 24.0 inch = 609.6 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 36.18 2918 1607 44576 9165 99.0 1.247
-09.0 83 36.58 2945 1637 45882 9240 99.2 1.231
-08.0 84 36.98 2972 1668 47222 9311 99.3 1.215
-07.0 85 37.39 2999 1698 48598 9379 99.5 1.199
-06.0 86 37.79 3026 1729 50009 9443 99.6 1.183
-05.0 87 38.19 3053 1759 51458 9504 99.8 1.168 ! Near Maximum !
-04.0 88 38.59 3079 1790 52945 9561 99.9 1.153 ! Near Maximum !
-03.0 89 38.99 3106 1820 54471 9614 99.9 1.138 ! Near Maximum !
-02.0 90 39.40 3132 1851 56037 9664 100.0 1.124 ! Near Maximum !
-01.0 91 39.80 3158 1882 57645 9710 100.0 1.110 ! Near Maximum !
+00.0 92 40.20 3184 1913 59296 9753 100.0 1.096 ! Near Maximum !
+01.0 93 40.60 3209 1944 60990 9794 100.0 1.082 !DANGEROUS LOAD-DO NOT USE!
+02.0 93 41.00 3235 1975 62730 9835 100.0 1.069 !DANGEROUS LOAD-DO NOT USE!
+03.0 94 41.41 3260 2006 64516 9875 100.0 1.056 !DANGEROUS LOAD-DO NOT USE!
+04.0 95 41.81 3285 2037 66350 9915 100.0 1.043 !DANGEROUS LOAD-DO NOT USE!
+05.0 96 42.21 3310 2068 68233 9954 100.0 1.031 !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 92 40.20 3281 2032 68501 9446 100.0 1.029 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 92 40.20 3039 1743 50024 9892 98.0 1.184
