8*57 Mauser

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Cartridge : 8 x 57 mm Mauser (SAAMI)
Bullet : .323, 150, Speer SP 2277
Useable Case Capaci: 57.286 grain H2O = 3.720 cm³
Cartridge O.A.L. L6: 2.953 inch = 75.00 mm
Barrel Length : 23.6 inch = 600.0 mm
Powder : Norma 203B

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 71 37.44 2079 1440 19818 5373 79.2 1.641
-18.0 73 38.38 2130 1511 20960 5573 80.6 1.604
-16.0 74 39.31 2180 1583 22168 5773 81.9 1.567
-14.0 76 40.25 2231 1658 23448 5971 83.2 1.531
-12.0 78 41.18 2282 1734 24803 6168 84.5 1.497
-10.0 80 42.12 2333 1813 26239 6362 85.7 1.462
-08.0 82 43.06 2384 1893 27760 6554 86.9 1.429
-06.0 83 43.99 2436 1976 29373 6742 88.0 1.397
-04.0 85 44.93 2487 2060 31083 6927 89.1 1.365 ! Near Maximum !
-02.0 87 45.86 2539 2147 32896 7108 90.2 1.334 ! Near Maximum !
+00.0 89 46.80 2590 2235 34813 7285 91.2 1.303 !DANGEROUS LOAD-DO NOT USE!
+02.0 90 47.74 2642 2325 36824 7456 92.1 1.274 !DANGEROUS LOAD-DO NOT USE!
+04.0 92 48.67 2694 2417 38938 7622 93.1 1.241 !DANGEROUS LOAD-DO NOT USE!
+06.0 94 49.61 2745 2511 41173 7782 93.9 1.210 !DANGEROUS LOAD-DO NOT USE!
+08.0 96 50.54 2797 2606 43540 7935 94.7 1.180 !DANGEROUS LOAD-DO NOT USE!
+10.0 97 51.48 2849 2703 46047 8082 95.5 1.150 !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 89 46.80 2749 2516 41841 7551 97.1 1.206 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 89 46.80 2399 1916 28198 6704 82.1 1.412

mvh
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