Cartridge : .300 H.& H. Mag.
Bullet : .308, 180, Barnes 'TTSX'BT 30372
Useable Case Capaci: 72.139 grain H2O = 4.684 cm³
Cartridge O.A.L. L6: 3.586 inch = 91.08 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Vihtavuori N560 *C
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 61.20 2608 2718 36626 9784 90.6 1.512
-09.0 91 61.88 2639 2783 37829 9922 91.2 1.491
-08.0 92 62.56 2670 2849 39075 10058 91.8 1.468
-07.0 93 63.24 2701 2916 40364 10191 92.4 1.446
-06.0 94 63.92 2732 2984 41685 10321 93.0 1.424
-05.0 95 64.60 2763 3052 43080 10449 93.5 1.402
-04.0 96 65.28 2795 3122 44512 10573 94.0 1.380
-03.0 97 65.96 2826 3192 45995 10693 94.5 1.359
-02.0 98 66.64 2857 3263 47530 10810 95.0 1.339
-01.0 99 67.32 2888 3335 49123 10924 95.5 1.319
+00.0 100 68.00 2920 3407 50774 11033 95.9 1.299
+01.0 101 68.68 2951 3481 52486 11139 96.4 1.280
+02.0 102 69.36 2982 3555 54261 11241 96.8 1.260 ! Near Maximum !
+03.0 103 70.04 3014 3630 56103 11338 97.1 1.241 ! Near Maximum !
+04.0 104 70.72 3045 3706 58016 11431 97.5 1.223 ! Near Maximum !
+05.0 105 71.40 3076 3783 60002 11520 97.8 1.205 ! Near Maximum !
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 68.00 3010 3620 56323 11117 98.4 1.243 ! Near Maximum !
Data for burning rate decreased by 5% relative to nominal value:
-Ba 100 68.00 2818 3173 45659 10791 92.4 1.362Cartridge : .300 H.& H. Mag.
Bullet : .308, 180, Barnes 'TTSX'BT 30372
Useable Case Capaci: 72.139 grain H2O = 4.684 cm³
Cartridge O.A.L. L6: 3.586 inch = 91.08 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Vihtavuori N560 *C
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 95 64.62 2764 3054 43121 10452 93.5 1.401
-09.0 96 65.34 2797 3127 44636 10583 94.1 1.379
-08.0 97 66.06 2830 3202 46207 10710 94.6 1.357
-07.0 98 66.77 2863 3277 47840 10833 95.1 1.335
-06.0 99 67.49 2896 3353 49534 10952 95.6 1.314
-05.0 100 68.21 2929 3430 51296 11066 96.1 1.293
-04.0 101 68.93 2963 3508 53126 11177 96.5 1.272 ! Near Maximum !
-03.0 102 69.65 2996 3587 55029 11282 96.9 1.252 ! Near Maximum !
-02.0 104 70.36 3029 3666 57007 11383 97.3 1.233 ! Near Maximum !
-01.0 105 71.08 3062 3747 59063 11479 97.7 1.213 ! Near Maximum !
+00.0 106 71.80 3095 3828 61204 11570 98.0 1.194 ! Near Maximum !
+01.0 107 72.52 3128 3910 63433 11655 98.3 1.175 !DANGEROUS LOAD-DO NOT USE!
+02.0 108 73.24 3161 3993 65754 11735 98.6 1.157 !DANGEROUS LOAD-DO NOT USE!
+03.0 109 73.95 3194 4077 68171 11810 98.9 1.139 !DANGEROUS LOAD-DO NOT USE!
+04.0 110 74.67 3227 4162 70693 11879 99.1 1.121 !DANGEROUS LOAD-DO NOT USE!
+05.0 111 75.39 3260 4247 73321 11942 99.3 1.103 !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 106 71.80 3181 4043 68018 11514 99.6 1.144 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 106 71.80 2995 3585 54881 11452 95.3 1.251 ! Near Maximum !
