QL 270 Win, 130 Ballistic Tip, IMR 4832

[frankm]

Would someone be so kind to run a QL on the following doing one with a Winchester case and one with a Remington case :
270 Win
CCI250
IMR4831
3.330 OAL
24" barrel.

Thx in advance for any help.

 

[NYDAN]

Frank,

QuickLOAD doesn't have a selection on brass manufacturer. We use the case "overflow water capacity" for what ever case we are using. That information helps to fine tune the QL projections. Also, to my knowledge, there is not selection for the primer type. I adjust the Ba factor (burning rate) for the powder to accommodate different powder lots and primers. I used the information you provided for this projection. All other variables are default values.

Dan

Cartridge          : .270 Win. (SAAMI)
Bullet             : .277, 130, Nosler BalTip 27130
Useable Case Capaci: 60.677 grain H2O = 3.940 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : IMR 4831

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.885% 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

-08.9   96    51.50   2878    2391   47495  10463     99.1    1.247
-08.0   97    52.00   2905    2435   48902  10536     99.2    1.230
-07.1   98    52.50   2931    2480   50350  10605     99.4    1.214
-06.2   99    53.00   2958    2525   51841  10670     99.6    1.198
-05.3  100    53.50   2984    2571   53376  10731     99.7    1.182
-04.4  101    54.00   3011    2616   54956  10789     99.8    1.166
-03.5  102    54.50   3037    2662   56583  10842     99.9    1.151  ! Near Maximum !
-02.7  103    55.00   3063    2708   58259  10891     99.9    1.135  ! Near Maximum !
-01.8  104    55.50   3089    2755   59984  10936    100.0    1.121  ! Near Maximum !
-00.9  105    56.00   3115    2801   61762  10976    100.0    1.106  ! Near Maximum !
+00.0  105    56.50   3141    2848   63593  11014    100.0    1.092  ! Near Maximum !
+00.9  106    57.00   3167    2894   65480  11050    100.0    1.077  !DANGEROUS LOAD-DO NOT USE!
+01.8  107    57.50   3192    2941   67424  11086    100.0    1.063  !DANGEROUS LOAD-DO NOT USE!
+02.7  108    58.00   3218    2989   69429  11121    100.0    1.050  !DANGEROUS LOAD-DO NOT USE!
+03.5  109    58.50   3243    3036   71496  11155    100.0    1.036  !DANGEROUS LOAD-DO NOT USE!
+04.4  110    59.00   3268    3083   73627  11189    100.0    1.023  !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    105    56.50   3255    3059   76156  10583    100.0    1.013  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    105    56.50   2969    2544   51234  11222     97.6    1.198

 

[frankm]

Dan, Thank you for the QL and the description of some of the defaults work. Appreciate your help; I should purchase my own copy and learn how to run it.

Have a good day and holiday!