Cartridge : 7 mm Rem SA Ultra Mag
Bullet : .284, 180, Berger Hunt VLD G7 #28502
Useable Case Capaci: 62.034 grain H2O = 4.028 cm³
Cartridge O.A.L. L6: 2.820 inch = 71.63 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Vihtavuori N568 *C*T
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
-10.0 100 59.94 2589 2679 43483 11772 94.3 1.457
-09.0 102 60.61 2623 2750 45161 11919 94.9 1.431
-08.0 103 61.27 2657 2821 46914 12061 95.4 1.405
-07.0 104 61.94 2691 2894 48745 12196 96.0 1.380
-06.0 105 62.60 2725 2967 50660 12326 96.5 1.356
-05.0 106 63.27 2759 3042 52663 12448 97.0 1.332
-04.0 107 63.94 2793 3118 54758 12565 97.4 1.308
-03.0 108 64.60 2827 3195 56952 12674 97.8 1.285 ! Near Maximum !
-02.0 109 65.27 2862 3273 59249 12776 98.2 1.262 ! Near Maximum !
-01.0 110 65.93 2896 3352 61658 12870 98.5 1.239 ! Near Maximum !
+00.0 112 66.60 2930 3431 64184 12956 98.8 1.217 ! Near Maximum !
+01.0 113 67.27 2964 3512 66833 13035 99.1 1.195 !DANGEROUS LOAD-DO NOT USE!
+02.0 114 67.93 2999 3594 69618 13105 99.3 1.174 !DANGEROUS LOAD-DO NOT USE!
+03.0 115 68.60 3033 3677 72543 13167 99.5 1.153 !DANGEROUS LOAD-DO NOT USE!
+04.0 116 69.26 3067 3760 75620 13219 99.7 1.132 !DANGEROUS LOAD-DO NOT USE!
+05.0 117 69.93 3101 3845 78852 13263 99.8 1.112 !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 112 66.60 3088 3810 80777 12465 100.0 1.112 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 112 66.60 2708 2930 50092 12581 92.1 1.355You are most welcome. Glad to help.
