300 Win Mag with a Barnes 180 TTSX QL request

PaLuke

Beginner
Mar 18, 2017
36
5
Good Morning. I’m loading for a 300 win mag with a 180 grain TTSX. The powders I have are H4350 and H4831. The local store has some IMR 4955 also. If it’s possible I’d appreciate a QL for the H4350 and the 4955. Thank you very much. Take care.
 
Code:
Cartridge          : .300 Win. Mag.(SAAMI)
Bullet             : .308, 180, Barnes 'TTSX'BT 30372
Useable Case Capaci: 77.945 grain H2O = 5.061 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Hodgdon H4350 *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   88    62.19   2643    2792   46739  11376     97.0    1.256
-09.0   89    62.88   2671    2851   48168  11498     97.3    1.238
-08.0   90    63.57   2698    2909   49640  11616     97.6    1.221
-07.0   91    64.26   2725    2969   51154  11731     97.9    1.203
-06.0   92    64.95   2753    3028   52713  11841     98.2    1.187
-05.0   93    65.65   2780    3088   54318  11949     98.5    1.170
-04.0   94    66.34   2807    3149   55970  12052     98.7    1.154  ! Near Maximum !
-03.0   95    67.03   2834    3210   57670  12151     98.9    1.137  ! Near Maximum !
-02.0   96    67.72   2861    3272   59421  12246     99.1    1.122  ! Near Maximum !
-01.0   97    68.41   2888    3334   61225  12337     99.3    1.107  ! Near Maximum !
+00.0   98    69.10   2915    3396   63082  12423     99.5    1.092  ! Near Maximum !
+01.0   99    69.79   2942    3459   64996  12505     99.6    1.077  !DANGEROUS LOAD-DO NOT USE!
+02.0  100    70.48   2968    3522   66967  12582     99.7    1.062  !DANGEROUS LOAD-DO NOT USE!
+03.0  101    71.17   2995    3585   68998  12655     99.8    1.048  !DANGEROUS LOAD-DO NOT USE!
+04.0  102    71.86   3021    3649   71092  12723     99.9    1.034  !DANGEROUS LOAD-DO NOT USE!
+05.0  103    72.56   3048    3713   73250  12786    100.0    1.020  !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     98    69.10   3024    3654   73540  12060    100.0    1.020  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     98    69.10   2762    3050   52701  12278     95.4    1.184

Code:
Cartridge          : .300 Win. Mag.(SAAMI)
Bullet             : .308, 180, Barnes 'TTSX'BT 30372
Useable Case Capaci: 77.945 grain H2O = 5.061 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : IMR 4955 Enduron *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   93    64.98   2628    2760   46234  11528     93.6    1.258
-09.0   94    65.70   2657    2821   47704  11674     94.1    1.240
-08.0   95    66.42   2686    2883   49221  11817     94.6    1.221
-07.0   96    67.15   2715    2946   50786  11957     95.0    1.204
-06.0   97    67.87   2744    3009   52402  12094     95.5    1.186
-05.0   98    68.59   2773    3073   54070  12228     95.9    1.169
-04.0   99    69.31   2802    3138   55792  12359     96.3    1.151  ! Near Maximum !
-03.0  100    70.03   2831    3203   57571  12486     96.6    1.135  ! Near Maximum !
-02.0  101    70.76   2860    3269   59408  12609     97.0    1.118  ! Near Maximum !
-01.0  102    71.48   2889    3336   61305  12729     97.3    1.102  ! Near Maximum !
+00.0  103    72.20   2918    3404   63266  12845     97.6    1.086  ! Near Maximum !
+01.0  104    72.92   2947    3472   65292  12957     97.9    1.071  !DANGEROUS LOAD-DO NOT USE!
+02.0  105    73.64   2976    3540   67387  13064     98.2    1.055  !DANGEROUS LOAD-DO NOT USE!
+03.0  106    74.37   3005    3610   69553  13168     98.5    1.040  !DANGEROUS LOAD-DO NOT USE!
+04.0  107    75.09   3034    3680   71794  13267     98.7    1.025  !DANGEROUS LOAD-DO NOT USE!
+05.0  108    75.81   3063    3750   74112  13361     98.9    1.011  !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    103    72.20   3046    3707   73862  12775     99.9    1.014  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    103    72.20   2751    3025   52862  12362     91.8    1.180
 
Thank you very much for the information. I’m going to try the H4831SC first and then the 4955. Thanks again. I’ll post my results first chance I get. Take care.
 
Trust one of the powders will work out for you. I used the 180 TSX for a number of years in my 300 WSM, and it accounted for a variety of big game here in BC. I liked the bullet, and the TTSX is even better.
 
That’s pretty danged good for a 22” barrel as well. A 180 in a 300 Win ain’t nothin to sneeze at.
 
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