Quickload StaBall 6.5 for 270Win

Code: 
Cartridge          : .270 Win. (SAAMI)
Bullet             : .277, 130, Nosler AccuBond 54987
Useable Case Capaci: 60.375 grain H2O = 3.920 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 22.0 inch = 558.8 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   89    53.46   2744    2173   45578  10634     99.6    1.189
-09.0   90    54.05   2773    2220   47135  10715     99.7    1.171
-08.0   91    54.65   2802    2267   48750  10791     99.8    1.153
-07.0   92    55.24   2832    2314   50418  10860     99.9    1.136
-06.0   93    55.84   2861    2362   52158  10924    100.0    1.118
-05.0   94    56.43   2889    2410   53957  10981    100.0    1.101
-04.0   95    57.02   2918    2458   55823  11035    100.0    1.084  ! Near Maximum !
-03.0   96    57.62   2947    2507   57758  11087    100.0    1.068  ! Near Maximum !
-02.0   97    58.21   2975    2555   59766  11138    100.0    1.052  ! Near Maximum !
-01.0   98    58.81   3004    2604   61850  11189    100.0    1.036  ! Near Maximum !
+00.0   99    59.40   3032    2654   64017  11238    100.0    1.020  ! Near Maximum !
+01.0  100    59.99   3060    2703   66268  11287    100.0    1.005  !DANGEROUS LOAD-DO NOT USE!
+02.0  101    60.59   3088    2753   68605  11334    100.0    0.990  !DANGEROUS LOAD-DO NOT USE!
+03.0  102    61.18   3116    2803   71034  11381    100.0    0.975  !DANGEROUS LOAD-DO NOT USE!
+04.0  103    61.78   3144    2854   73564  11426    100.0    0.961  !DANGEROUS LOAD-DO NOT USE!
+05.0  104    62.37   3172    2905   76193  11471    100.0    0.946  !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     99    59.40   3087    2751   70292  11045    100.0    0.983  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     99    59.40   2964    2535   58048  11465    100.0    1.063  ! Near Maximum !
 
Code: 
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             : 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   88    54.27   2747    2179   45472  10840     99.6    1.190
-09.0   89    54.87   2776    2225   47014  10922     99.8    1.172
-08.0   90    55.48   2806    2272   48616  10998     99.9    1.154
-07.0   91    56.08   2834    2319   50272  11069     99.9    1.137
-06.0   92    56.68   2863    2367   51987  11133    100.0    1.119
-05.0   93    57.29   2892    2414   53767  11192    100.0    1.102
-04.0   94    57.89   2921    2462   55610  11247    100.0    1.086  ! Near Maximum !
-03.0   95    58.49   2949    2510   57522  11302    100.0    1.069  ! Near Maximum !
-02.0   96    59.09   2977    2559   59507  11355    100.0    1.053  ! Near Maximum !
-01.0   97    59.70   3006    2608   61564  11408    100.0    1.038  ! Near Maximum !
+00.0   98    60.30   3034    2657   63699  11460    100.0    1.022  ! Near Maximum !
+01.0   99    60.90   3062    2706   65914  11511    100.0    1.007  !DANGEROUS LOAD-DO NOT USE!
+02.0  100    61.51   3090    2756   68218  11561    100.0    0.992  !DANGEROUS LOAD-DO NOT USE!
+03.0  101    62.11   3118    2805   70608  11610    100.0    0.977  !DANGEROUS LOAD-DO NOT USE!
+04.0  102    62.71   3145    2856   73097  11658    100.0    0.963  !DANGEROUS LOAD-DO NOT USE!
+05.0  103    63.32   3173    2906   75675  11704    100.0    0.949  !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     98    60.30   3089    2753   69893  11268    100.0    0.985  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     98    60.30   2966    2539   57757  11688    100.0    1.064  ! Near Maximum !
 
SB6.5 did really well in my old Rem 270 barrel and kind of picky with the bullet it likes in the new Douglas barrel. Like any others just find what they like. I do like this powder. Dan.
 
wvbuckbuster said:
SB6.5 did really well in my old Rem 270 barrel and kind of picky with the bullet it likes in the new Douglas barrel. Like any others just find what they like. I do like this powder. Dan.
Click to expand...
It was a very easy powder to work with. Flows like water, didn’t seem spikey, great velocity, and finding an accurate load was very easy with no fuss. Tightest group with the charge my rifle likes at .030” off the lands and I was done. Clean burning and recoiled seemed a little less compared to IMR4831. There wasn’t any difference in the 2 powders performance with regards to accuracy, velocity is close enough to call equal, but SB 6.5 charges can be thrown and be within .1 grain as checked by scale. Haven’t noticed any copper fouling with either because I use TubbDust. Looks even better in the 30/06 but I haven’t tried it there yet.
 
wvbuckbuster said:
SB6.5 did really well in my old Rem 270 barrel and kind of picky with the bullet it likes in the new Douglas barrel. Like any others just find what they like. I do like this powder. Dan.
Click to expand...
Dan I’ve got 130gr Hot Cor’s, SST’s, BT’s, and even a few hundred Federal Power Shock bullets i bought from Grafs. I could send some if you wanted to try and find a combo it likes.
 
Joec7651 said:
Dan I’ve got 130gr Hot Cor’s, SST’s, BT’s, and even a few hundred Federal Power Shock bullets i bought from Grafs. I could send some if you wanted to try and find a combo it likes.
Click to expand...
Joe, I appreciate the offer, but I have most of those. Hunter and IMR 4831 has given me good groups with the 130gr bullets. SB6.5 is doing well with Sierra 150gr Game King. You wouldn't happen to have a spare box you'd sell me, would you? Dan.
 
wvbuckbuster said:
Joe, I appreciate the offer, but I have most of those. Hunter and IMR 4831 has given me good groups with the 130gr bullets. SB6.5 is doing well with Sierra 150gr Game King. You wouldn't happen to have a spare box you'd sell me, would you? Dan.
Click to expand...
Unfortunately, I don’t have any 150 grain bullets at all for a 270. If I need a heavier bullet in .277 I use the E-Tip, or Partition. They usually let it punch a little above it’s weight class.
 
If you’d like to try a mono I could hook you up with a pack or two of E-Tips if you can’t find any. That’s about the extent of what I have on hand for the 270 Win right now. 56.1 grains of Staball 6.5 runs them at 3150ish in mine from a 24” barrel. 55.5 grains IMR4831 gets the same 3150 with them if you think the IMR would be more agreeable with your barrel.
 
Last edited:
Joec7651 said:
If you’d like to try a mono I could hook you up with a pack or two of E-Tips if you can’t find any. That’s about the extent of what I have on hand for the 270 Win right now. 56.1 grains of Staball 6.5 runs them at 3150ish in mine from a 24” barrel. 55.5 grains IMR4831 gets the same 3150 with them if you think the IMR would be more agreeable with your barrel.
Click to expand...
Thanks for the offer, Joe but don't think I'll try the E-Tips at this time. Have enough 130 and 140s to play with. Dan.
 
wvbuckbuster said:
Thanks for the offer, Joe but don't think I'll try the E-Tips at this time. Have enough 130 and 140s to play with. Dan.
Click to expand...
Good deal. I’m sure you’ll get the performance you’re looking for. I’ve always had pretty good luck getting 270’s shooting well. Keep us posted on how it goes. 👍🏻
 
I did a little ladder test in the back yard yesterday. Looks to be a spot around 56.5 grs at 3110 fps. Not bad for a 22" barrel. I had to be very patient in 100 degree temp. The barrel got hot as a fire cracker real quick. I took it back in house after each shot to cool us down.
 
Bruce - ya, gotta take care of the barrel. Nice that you can shoot so close to your house!

56.5 gr is max for the 270 with a 130 gr Barnes TSX according to Hodgdon. Best of luck with it this season.

Guy
 
Bruce Mc said:
I did a little ladder test in the back yard yesterday. Looks to be a spot around 56.5 grs at 3110 fps. Not bad for a 22" barrel. I had to be very patient in 100 degree temp. The barrel got hot as a fire cracker real quick. I took it back in house after each shot to cool us down.
Click to expand...
I use a barrel cooler made from an air mattress pump and a piece of plastic tubing. Helps to cool the barrel down. Place the tube on pump and other end in chamber. Hold in place with the bolt shoved against it and good to go. Magneto, I think it is makes a small one that fits in the action. Dan.
 
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