Cartridge : .243 Win.
Bullet : .243, 75, Sierra HP 1510
Useable Case Capaci: 51.487 grain H2O = 3.343 cm³
Cartridge O.A.L. L6: 2.645 inch = 67.18 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 42.13 2998 1496 38865 11282 93.8 1.190
-09.0 94 42.60 3032 1531 40168 11423 94.4 1.172
-08.0 95 43.07 3067 1567 41513 11560 94.9 1.154
-07.0 96 43.53 3102 1602 42904 11693 95.4 1.136
-06.0 97 44.00 3137 1639 44341 11822 95.9 1.119
-05.0 98 44.47 3171 1675 45825 11947 96.4 1.101
-04.0 99 44.94 3206 1712 47360 12067 96.8 1.084
-03.0 100 45.41 3241 1749 48945 12182 97.2 1.068
-02.0 101 45.87 3275 1787 50585 12292 97.6 1.052
-01.0 102 46.34 3310 1825 52279 12398 97.9 1.036 ! Near Maximum !
+00.0 103 46.81 3345 1863 54031 12497 98.3 1.020 ! Near Maximum !
+01.0 104 47.28 3379 1901 55842 12592 98.6 1.005 ! Near Maximum !
+02.0 105 47.75 3413 1940 57716 12681 98.8 0.989 ! Near Maximum !
+03.0 106 48.21 3448 1979 59654 12764 99.1 0.975 !DANGEROUS LOAD-DO NOT USE!
+04.0 107 48.68 3482 2019 61659 12842 99.3 0.960 !DANGEROUS LOAD-DO NOT USE!
+05.0 108 49.15 3516 2059 63734 12913 99.5 0.946 !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 103 46.81 3437 1967 59586 12457 99.7 0.976 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 103 46.81 3237 1745 48563 12357 95.6 1.070
