Cartridge : .22-250 Rem. (CIP)
Bullet : .224, 75, Swift Scirocco
Useable Case Capaci: 38.508 grain H2O = 2.500 cm³
Cartridge O.A.L. L6: 2.490 inch = 63.25 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-15
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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
-20.0 73 26.01 2558 1090 31854 9036 92.4 1.369
-18.0 75 26.66 2617 1141 33821 9301 93.5 1.335
-16.0 77 27.31 2676 1193 35900 9557 94.4 1.302
-14.0 79 27.96 2735 1246 38096 9804 95.3 1.270
-12.0 81 28.61 2794 1300 40416 10040 96.2 1.237
-10.0 82 29.26 2853 1355 42868 10264 96.9 1.203
-08.0 84 29.91 2911 1411 45457 10477 97.6 1.170
-06.0 86 30.56 2969 1468 48192 10677 98.2 1.138
-04.0 88 31.21 3027 1525 51082 10863 98.7 1.107 ! Near Maximum !
-02.0 90 31.86 3084 1584 54136 11035 99.1 1.077 ! Near Maximum !
+00.0 92 32.51 3140 1642 57364 11192 99.5 1.049 ! Near Maximum !
+02.0 93 33.16 3197 1702 60777 11334 99.7 1.021 !DANGEROUS LOAD-DO NOT USE!
+04.0 95 33.81 3253 1762 64388 11459 99.9 0.995 !DANGEROUS LOAD-DO NOT USE!
+06.0 97 34.46 3308 1822 68208 11567 100.0 0.969 !DANGEROUS LOAD-DO NOT USE!
+08.0 99 35.11 3363 1883 72254 11659 100.0 0.945 !DANGEROUS LOAD-DO NOT USE!
+10.0 101 35.76 3417 1944 76540 11746 100.0 0.921 !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 32.51 3264 1774 67323 10851 100.0 0.976 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 92 32.51 2967 1466 47515 11058 95.2 1.144
