270 Win quick load

[Bruce Mc]

Would someone run out a quick load table for the venerable old 270 Winchester for the 130 Nosler Partiton and Reloder 16 and a 22 inch barrel. Thank you in advance.

 

[DrMike]

Cartridge          : .270 Win. (SAAMI)
Bullet             : .277, 130, Nosler PART SP 16322
Useable Case Capaci: 61.884 grain H2O = 4.018 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-16 *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   90    50.22   2845    2336   46007  12162     98.7    1.173
-09.0   91    50.78   2875    2386   47492  12272     99.0    1.156
-08.0   92    51.34   2906    2437   49025  12376     99.2    1.138
-07.0   93    51.89   2936    2488   50608  12474     99.4    1.122
-06.0   94    52.45   2966    2539   52244  12566     99.6    1.105
-05.0   95    53.01   2996    2591   53932  12651     99.7    1.089
-04.0   96    53.57   3026    2642   55676  12731     99.8    1.073  ! Near Maximum !
-03.0   97    54.13   3055    2695   57478  12804     99.9    1.058  ! Near Maximum !
-02.0   98    54.68   3085    2747   59341  12870    100.0    1.043  ! Near Maximum !
-01.0   99    55.24   3114    2799   61266  12930    100.0    1.028  ! Near Maximum !
+00.0  100    55.80   3143    2852   63256  12984    100.0    1.013  ! Near Maximum !
+01.0  101    56.36   3172    2905   65312  13038    100.0    0.998  !DANGEROUS LOAD-DO NOT USE!
+02.0  102    56.92   3201    2958   67440  13090    100.0    0.984  !DANGEROUS LOAD-DO NOT USE!
+03.0  103    57.47   3230    3012   69639  13142    100.0    0.970  !DANGEROUS LOAD-DO NOT USE!
+04.0  104    58.03   3259    3065   71917  13193    100.0    0.957  !DANGEROUS LOAD-DO NOT USE!
+05.0  105    58.59   3287    3119   74272  13242    100.0    0.943  !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    100    55.80   3260    3069   75963  12493    100.0    0.941  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    100    55.80   2968    2542   51731  13175     97.4    1.107

 

[Bruce Mc]

Thanks Mike.