33 nosler load data with V V 565 POWDER

[Tommy T]

Hi I’m new to this site so I was wanting to know if you guys have used VV n565 powder in a 33 nosler . I’m having one build and could use a little help with some load data for a 250 gn. Bullet I’m using a Bartlein 24” barrel steel and I have a lot of the n565 powder thanks for any help TT.

 

[DrMike]

Welcome aboard, Tommy.

Here's a QL projection that may help.

Cartridge          : .33 Nosler
Bullet             : .338, 250, Nosler PART SP 35644
Useable Case Capaci: 84.755 grain H2O = 5.503 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Vihtavuori N565 *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   98    78.66   2548    3604   44303  11282     95.4    1.435
-09.0   99    79.53   2579    3693   45947  11412     95.9    1.411
-08.0  100    80.41   2610    3783   47656  11537     96.4    1.387
-07.0  101    81.28   2642    3874   49432  11658     96.8    1.364
-06.0  102    82.16   2673    3967   51278  11773     97.3    1.341
-05.0  103    83.03   2704    4060   53199  11882     97.6    1.318
-04.0  105    83.90   2736    4155   55196  11986     98.0    1.296
-03.0  106    84.78   2767    4250   57275  12085     98.3    1.274  ! Near Maximum !
-02.0  107    85.65   2798    4347   59439  12177     98.6    1.253  ! Near Maximum !
-01.0  108    86.53   2830    4445   61692  12263     98.9    1.232  ! Near Maximum !
+00.0  109    87.40   2861    4544   64039  12343     99.1    1.211  ! Near Maximum !
+01.0  110    88.27   2892    4643   66484  12416     99.4    1.191  !DANGEROUS LOAD-DO NOT USE!
+02.0  111    89.15   2923    4744   69034  12482     99.5    1.171  !DANGEROUS LOAD-DO NOT USE!
+03.0  112    90.02   2955    4846   71694  12542     99.7    1.151  !DANGEROUS LOAD-DO NOT USE!
+04.0  113    90.90   2986    4949   74469  12594     99.8    1.132  !DANGEROUS LOAD-DO NOT USE!
+05.0  114    91.77   3017    5052   77366  12639     99.9    1.113  !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    109    87.40   2938    4792   71469  12156    100.0    1.157  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    109    87.40   2769    4256   56784  12333     97.0    1.273  ! Near Maximum !