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Cartridge : .25 WSSM
Bullet : .257, 80, Barnes 'TTSX'BT 30218
Useable Case Capaci: 50.335 grain H2O = 3.268 cm³
Cartridge O.A.L. L6: 2.360 inch = 59.94 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : IMR 4350
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 94 43.61 3086 1692 41608 8675 88.7 1.157
-09.0 96 44.09 3121 1730 42946 8793 89.3 1.143
-08.0 97 44.57 3155 1768 44329 8908 89.9 1.128
-07.0 98 45.06 3190 1807 45762 9022 90.4 1.113
-06.0 99 45.54 3224 1847 47246 9134 91.0 1.099
-05.0 100 46.03 3259 1887 48782 9243 91.6 1.085
-04.0 101 46.51 3294 1927 50374 9351 92.1 1.071
-03.0 102 47.00 3329 1968 52024 9455 92.6 1.056
-02.0 103 47.48 3363 2010 53734 9558 93.1 1.041
-01.0 104 47.97 3398 2051 55506 9657 93.6 1.026 ! Near Maximum !
+00.0 105 48.45 3433 2094 57343 9754 94.1 1.011 ! Near Maximum !
+01.0 106 48.93 3468 2137 59250 9848 94.6 0.996 ! Near Maximum !
+02.0 107 49.42 3503 2180 61228 9940 95.0 0.982 ! Near Maximum !
+03.0 108 49.90 3538 2224 63273 10027 95.5 0.968 !DANGEROUS LOAD-DO NOT USE!
+04.0 109 50.39 3573 2268 65387 10112 95.9 0.954 !DANGEROUS LOAD-DO NOT USE!
+05.0 110 50.87 3609 2313 67574 10194 96.3 0.940 !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 105 48.45 3528 2211 62528 9896 96.8 0.973 ! Near Maximum !
Data for burning rate decreased by 5% relative to nominal value:
-Ba 105 48.45 3328 1967 52259 9510 90.7 1.053
Cartridge : .25 WSSM
Bullet : .257, 80, Barnes 'TTSX'BT 30218
Useable Case Capaci: 50.335 grain H2O = 3.268 cm³
Cartridge O.A.L. L6: 2.360 inch = 59.94 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon VARGET
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 90 40.40 3183 1800 45228 8834 95.5 1.114
-09.0 91 40.85 3215 1837 46587 8929 95.9 1.101
-08.0 92 41.30 3248 1873 47987 9023 96.3 1.089
-07.0 93 41.75 3280 1911 49431 9114 96.7 1.076
-06.0 94 42.20 3312 1948 50919 9202 97.0 1.064
-05.0 95 42.65 3344 1986 52453 9288 97.4 1.050
-04.0 96 43.09 3376 2025 54036 9370 97.7 1.037
-03.0 97 43.54 3408 2063 55667 9450 98.0 1.023 ! Near Maximum !
-02.0 98 43.99 3440 2102 57350 9527 98.3 1.009 ! Near Maximum !
-01.0 99 44.44 3472 2141 59086 9601 98.5 0.996 ! Near Maximum !
+00.0 100 44.89 3503 2180 60876 9671 98.7 0.983 ! Near Maximum !
+01.0 101 45.34 3535 2220 62724 9738 99.0 0.970 ! Near Maximum !
+02.0 102 45.79 3567 2260 64631 9802 99.2 0.957 !DANGEROUS LOAD-DO NOT USE!
+03.0 103 46.24 3598 2300 66599 9863 99.3 0.944 !DANGEROUS LOAD-DO NOT USE!
+04.0 104 46.69 3629 2340 68630 9920 99.5 0.932 !DANGEROUS LOAD-DO NOT USE!
+05.0 105 47.13 3661 2380 70728 9973 99.6 0.920 !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 100 44.89 3578 2275 65790 9622 99.8 0.950 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 100 44.89 3416 2073 56012 9613 96.8 1.020 ! Near Maximum !