QL 264wm 143gr

[Slimfinn]

Not sure all the components are in QL
264 winchester mag
25" barrel length
143gr norma bond strike
Winchester staBallHD & retumbo
thanks

 

[TackDriver284]

Cartridge          : .264 Win. Mag.
Bullet             : .264, 143, Norma Bondstrike
Useable Case Capaci: 74.397 grain H2O = 4.831 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 25.0 inch = 635.0 mm
Powder             : Hodgdon Retumbo

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    64.35   2827    2537   43616  13626    100.0    1.469
-09.0   94    65.07   2859    2595   45167  13702    100.0    1.445
-08.0   95    65.78   2891    2654   46775  13771    100.0    1.421
-07.0   96    66.50   2923    2712   48447  13839    100.0    1.398
-06.0   97    67.21   2954    2771   50182  13905    100.0    1.375
-05.0   98    67.93   2986    2830   51983  13971    100.0    1.353
-04.0  100    68.64   3017    2890   53856  14036    100.0    1.331  ! Near Maximum !
-03.0  101    69.36   3048    2950   55802  14099    100.0    1.310  ! Near Maximum !
-02.0  102    70.07   3079    3010   57825  14162    100.0    1.289  ! Near Maximum !
-01.0  103    70.79   3110    3070   59931  14223    100.0    1.268  ! Near Maximum !
+00.0  104    71.50   3140    3131   62104  14283    100.0    1.248  !DANGEROUS LOAD-DO NOT USE!
+01.0  105    72.22   3171    3192   64396  14342    100.0    1.228  !DANGEROUS LOAD-DO NOT USE!
+02.0  106    72.93   3201    3253   66766  14400    100.0    1.208  !DANGEROUS LOAD-DO NOT USE!
+03.0  107    73.65   3231    3315   69233  14457    100.0    1.189  !DANGEROUS LOAD-DO NOT USE!
+04.0  108    74.36   3261    3377   71786  14512    100.0    1.170  !DANGEROUS LOAD-DO NOT USE!
+05.0  109    75.08   3292    3440   74432  14566    100.0    1.151  !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    104    71.50   3262    3379   77166  13777    100.0    1.145  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    104    71.50   2951    2765   48830  14918     99.5    1.383

 

[TackDriver284]

This Staball powder is what I have in QL, I don't have the Staball HD.

Cartridge          : .264 Win. Mag.
Bullet             : .264, 143, Norma Bondstrike
Useable Case Capaci: 74.397 grain H2O = 4.831 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 25.0 inch = 635.0 mm
Powder             : Winchester 6,5 StaBall *T*C

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   78    57.60   2709    2330   46326  10797    100.0    1.436
-09.0   79    58.24   2733    2372   47734  10871    100.0    1.416
-08.0   80    58.88   2758    2415   49180  10945    100.0    1.396
-07.0   81    59.52   2782    2457   50666  11017    100.0    1.378
-06.0   82    60.16   2806    2500   52193  11089    100.0    1.359
-05.0   82    60.80   2830    2543   53762  11161    100.0    1.340  ! Near Maximum !
-04.0   83    61.44   2854    2586   55375  11231    100.0    1.323  ! Near Maximum !
-03.0   84    62.08   2878    2629   57033  11301    100.0    1.305  ! Near Maximum !
-02.0   85    62.72   2901    2673   58737  11371    100.0    1.288  ! Near Maximum !
-01.0   86    63.36   2925    2717   60489  11439    100.0    1.271  ! Near Maximum !
+00.0   87    64.00   2949    2760   62290  11507    100.0    1.254  !DANGEROUS LOAD-DO NOT USE!
+01.0   88    64.64   2972    2804   64142  11574    100.0    1.238  !DANGEROUS LOAD-DO NOT USE!
+02.0   88    65.28   2995    2849   66047  11641    100.0    1.222  !DANGEROUS LOAD-DO NOT USE!
+03.0   89    65.92   3019    2893   68005  11707    100.0    1.206  !DANGEROUS LOAD-DO NOT USE!
+04.0   90    66.56   3042    2938   70020  11772    100.0    1.191  !DANGEROUS LOAD-DO NOT USE!
+05.0   91    67.20   3065    2983   72093  11836    100.0    1.176  !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     87    64.00   3021    2898   72498  11253    100.0    1.179  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     87    64.00   2841    2562   51803  11873    100.0    1.356

 

[JD338]

Retumbo looks pretty good in the 264 Win Mag. It brings out the beast.

JD338

 

[Slimfinn]

Thanks Tack!

Retumbo looks pretty good in the 264 Win Mag. It brings out the beast.

JD338

I've started with Retumbo and so far its looking great, but am working on getting some HD in a trade and was curious what it would do. Hodgdon does show it pushing just a bit slower.

 

[sako2]

Hd was similar to retumbo in my 6.5 prc. They're right next to each other on the burn rate chart. Hd is a tad slower.

 

[SJB358]

Retumbo looks pretty good in the 264 Win Mag. It brings out the beast.

JD338

It really does. Makes 140’s get up to 3200 pretty nicely.