130 Sierra Quickload

[Bruce Mc]

Could I impose on one of y'all to run the 130gr Sierra Gameking in the 270 win running H-4831sc. 22"barrel. The OAL is going to be 3.270"

 

[DrMike]

Cartridge          : .270 Win. (SAAMI)
Bullet             : .277, 130, Sierra SPBT 1820
Useable Case Capaci: 61.472 grain H2O = 3.991 cm³
Cartridge O.A.L. L6: 3.270 inch = 83.06 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Hodgdon H4831 SC *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   96    54.81   2747    2178   44844  11623     90.2    1.195
-09.0   97    55.42   2781    2232   46452  11787     90.8    1.175
-08.0   98    56.03   2815    2287   48124  11949     91.5    1.156
-07.0   99    56.64   2849    2343   49863  12107     92.1    1.137
-06.0  100    57.25   2883    2399   51669  12261     92.7    1.118
-05.0  101    57.86   2917    2457   53553  12412     93.2    1.100
-04.0  102    58.46   2952    2515   55510  12559     93.8    1.081  ! Near Maximum !
-03.0  103    59.07   2986    2575   57552  12701     94.3    1.064  ! Near Maximum !
-02.0  104    59.68   3021    2635   59678  12839     94.8    1.046  ! Near Maximum !
-01.0  105    60.29   3056    2696   61891  12973     95.3    1.029  ! Near Maximum !
+00.0  106    60.90   3091    2758   64200  13102     95.8    1.012  ! Near Maximum !
+01.0  107    61.51   3126    2820   66611  13225     96.2    0.995  !DANGEROUS LOAD-DO NOT USE!
+02.0  108    62.12   3161    2884   69126  13343     96.7    0.979  !DANGEROUS LOAD-DO NOT USE!
+03.0  110    62.73   3196    2948   71753  13456     97.1    0.963  !DANGEROUS LOAD-DO NOT USE!
+04.0  111    63.34   3231    3014   74497  13562     97.4    0.947  !DANGEROUS LOAD-DO NOT USE!
+05.0  112    63.95   3266    3080   77366  13663     97.8    0.931  !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    60.90   3178    2916   70638  13223     98.1    0.971  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    106    60.90   2992    2584   58101  12818     92.5    1.058  ! Near Maximum !

 

[Bruce Mc]

Thankyou Mike.