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Old March 29, 2010, 09:07 PM   #6
steve4102
Senior Member
 
Join Date: December 23, 2005
Location: Minnesota
Posts: 2,949
Cartridge : 6.5 x 55 Swedish
Bullet : .264, 140, Sierra SPBT 1730
Cartridge O.A.L. L6: 3.000 inch or 76.20 mm
Barrel Length : 23.6 inch or 599.4 mm
Powder : IMR 4831

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 79 36.00 2256 1582 30867 8663 96.1 1.639
-18.0 81 36.90 2309 1657 32860 8889 96.9 1.597
-16.0 83 37.80 2361 1733 34972 9102 97.6 1.557
-14.0 85 38.70 2413 1811 37212 9303 98.3 1.516
-12.0 87 39.60 2465 1890 39587 9489 98.8 1.471
-10.0 89 40.50 2517 1969 42103 9661 99.3 1.429
-08.0 91 41.40 2568 2050 44770 9817 99.6 1.388
-06.0 93 42.30 2619 2132 47598 9957 99.8 1.349 ! Near Maximum !
-04.0 95 43.20 2669 2215 50597 10081 100.0 1.311 ! Near Maximum !
-02.0 97 44.10 2719 2298 53778 10187 100.0 1.275 ! Near Maximum !
+00.0 99 45.00 2768 2382 57153 10285 100.0 1.240 !DANGEROUS LOAD-DO NOT USE!
+02.0 101 45.90 2817 2467 60736 10380 100.0 1.206 !DANGEROUS LOAD-DO NOT USE!
+04.0 103 46.80 2865 2552 64542 10473 100.0 1.174 !DANGEROUS LOAD-DO NOT USE!
+06.0 105 47.70 2913 2638 68589 10562 100.0 1.143 !DANGEROUS LOAD-DO NOT USE!
+08.0 107 48.60 2961 2725 72893 10649 100.0 1.112 !DANGEROUS LOAD-DO NOT USE!
+10.0 109 49.50 3008 2813 77476 10733 100.0 1.083 !DANGEROUS LOAD-DO NOT USE!
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