Vihtavuori powders

[Kuula]

I would appreciate if someone has loading data for .300Wby loaded with N165 and 180Accubond. I have loaded the 165:s with 80,7gr of N160 and i think it might be little too light for moose? And i also would like to have data and experiences from 95gr Ballistic tip in.243win for Whitetails. I have loaded 95gr B-Tips with 44gr of N160 but i havent had the chance to test them because my Rem 700 is having Silencer/supressor installed for better accuracy and protecting my left ears ability to hear a little longer.... almost forgot, Merry Christmas and Happy New year

 

[DrMike]

Cartridge : .300 Weath. Mag.
Bullet : .308, 180, Nosler AccuBond 54825
Useable Case Capaci: 87.045 grain H2O = 5.652 cm³
Cartridge O.A.L. L6: 3.560 inch = 90.42 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Vihtavuori N165

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 82 64.80 2414 2330 32022 9982 92.6 1.572
-18.0 84 66.42 2475 2448 34252 10282 93.7 1.531
-16.0 86 68.04 2535 2568 36608 10570 94.8 1.490
-14.0 88 69.66 2595 2692 39107 10844 95.8 1.443
-12.0 90 71.28 2655 2818 41774 11103 96.7 1.398
-10.0 92 72.90 2715 2947 44621 11345 97.5 1.355
-08.0 94 74.52 2775 3079 47661 11570 98.1 1.314
-06.0 96 76.14 2835 3213 50909 11775 98.7 1.273
-04.0 98 77.76 2895 3349 54381 11960 99.2 1.235 ! Near Maximum !
-02.0 100 79.38 2954 3487 58096 12124 99.6 1.198 ! Near Maximum !
+00.0 102 81.00 3013 3628 62072 12265 99.8 1.162 ! Near Maximum !
+02.0 104 82.62 3071 3770 66332 12383 100.0 1.128 !DANGEROUS LOAD-DO NOT USE!
+04.0 106 84.24 3129 3914 70903 12476 100.0 1.094 !DANGEROUS LOAD-DO NOT USE!
+06.0 108 85.86 3187 4059 75811 12558 100.0 1.062 !DANGEROUS LOAD-DO NOT USE!
+08.0 110 87.48 3244 4207 81089 12636 100.0 1.031 !DANGEROUS LOAD-DO NOT USE!
+10.0 112 89.10 3301 4355 86773 12709 100.0 1.001 !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 102 81.00 3132 3920 73909 11815 100.0 1.079 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 102 81.00 2840 3224 50430 12233 96.0 1.273

 

[R Flowers]

The following is from the 3rd edition of the Vihtavuori Reloading Manual:

300 Weatherby with the 165 grain Speer boat tail;
N 160 powder 74.8 grains starting load 2818 fps 82.9 grains maximum load 3193 fps
N165 powder 80.9 grains starting load 2823 fps 89.6 grains maximum load 3216 fps

The only 243 Winchester loads in this book using a 95 grain bullet are for a 95 grain Barnes X and N 560 powder, they seem quite mild.

243 Winchester data with a 100 grain Hornady SPBT is as follows:

N 160 powder 40.8 grains starting load 2615 fps 45.3 grains maximum load 2903 fps
N 165 powder 44.0 grains starting load 2647 fps 49.3 grains maximum load 2932 fps

Hope this helps.

 

[Kuula]

Done some testing with the Weatherby mark V .300Wby 165AB and 80,7gr N160 load gave around 3160fps

Rem 700 with supressor .243win 95gr BT gave 3035fps with 44gr of N160(Accuracy was great)

I was wondering those QL-calculation above... The max, seems to be quite mild compared to the load data that i ran in to in the Weatherby forum. One guy had loaded the 180gr AB with 84,5gr of N165, load gave about 3150fps.


I

 

[ElmerThud]

I can tell you my load, but work up carefully.

Cases: Remington 2.035" Neck sized
Primer: Rem. 9 1/2
Propellant: Vit. N160 x 44.5gns
Bullet: Nosler 95gn Ballistic Tip
OAL: Measured using a comparator: 2.490"

The twist on my rifle is 1-10 and the load extremely accurate in my rifle.
Certainly more than enough vel/energy for whitetail.
I've taken heavy Red stags in Scotland with this load. Cheers, ET