quickload request 458 socom

[sl0re10]

Hi,

Since quickload is usually used to see max pressure recipes I wanted to see if anyone could check a starting load to see if it is safe (since sometimes too little case fill can cause problems).

458 socom
16 inch barrel
300 grain jacketed hollow point such as remington
seated to 2.02
Winchester large pistol primer
29.6 grains of VV N110

Thank you.

[ar15barrels]

Quickload won't tell you if a load is safe.
It just gives you raw calculations.

The powder manufacturer could probably advise you on minimum case fill safety for one of their powders though given these calculations:

Cartridge          : .458 Socom
Bullet             : .458, 300, Remington HP
Useable Case Capaci: 45.864 grain H2O = 2.978 cm³
Cartridge O.A.L. L6: 2.020 inch = 51.31 mm
Barrel Length      : 16.2 inch = 411.5 mm
Powder             : Vihtavuori N110

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.634% 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

-16.3   71    25.60   1539    1578   20893   3134     95.3    1.360
-14.7   73    26.10   1565    1631   21761   3198     95.9    1.336
-13.1   74    26.60   1590    1684   22659   3260     96.4    1.313
-11.4   76    27.10   1615    1738   23593   3321     96.9    1.291
-09.8   77    27.60   1640    1793   24564   3380     97.4    1.270
-08.2   78    28.10   1665    1847   25574   3437     97.8    1.248
-06.5   80    28.60   1690    1903   26624   3492     98.2    1.228
-04.9   81    29.10   1715    1959   27715   3544     98.6    1.208
-03.3   83    29.60   1739    2015   28849   3595     98.9    1.188
-01.6   84    30.10   1764    2072   30026   3644     99.1    1.169  ! Near Maximum !
+00.0   85    30.60   1788    2129   31248   3690     99.4    1.150  ! Near Maximum !
+01.6   87    31.10   1812    2186   32518   3734     99.6    1.132  ! Near Maximum !
+03.3   88    31.60   1835    2244   33836   3775     99.7    1.114  ! Near Maximum !
+04.9   90    32.10   1859    2302   35205   3814     99.8    1.097  !DANGEROUS LOAD-DO NOT USE!
+06.5   91    32.60   1882    2360   36627   3850     99.9    1.080  !DANGEROUS LOAD-DO NOT USE!
+08.2   92    33.10   1906    2419   38102   3884    100.0    1.062  !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     85    30.60   1857    2298   37008   3543    100.0    1.085  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     85    30.60   1689    1900   25723   3671     94.9    1.234

[sl0re10]

Thanks Randall.

I put in a request with the powder maker.