reloading 243 win. with vihtavuori n 550

[bmiller]

could I ask for one of you guys to run a quickload data for a 20 " barrel 243 using n 550 and a Norma 100 gr Oryx bullet? Thanks

 

[DrMike]

Cartridge          : .243 Win.
Bullet             : .243, 100, Norma Oryx 66050
Useable Case Capaci: 48.438 grain H2O = 3.145 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
Barrel Length      : 20.0 inch = 508.0 mm
Powder             : Vihtavuori N550 *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   83    37.80   2622    1527   43694  12062     97.8    1.231
-09.0   84    38.22   2650    1559   45055  12184     98.1    1.213
-08.0   85    38.64   2677    1592   46455  12302     98.4    1.195
-07.0   86    39.06   2705    1625   47896  12415     98.7    1.178
-06.0   87    39.48   2732    1658   49379  12523     99.0    1.161
-05.0   87    39.90   2759    1691   50905  12627     99.2    1.145
-04.0   88    40.32   2787    1724   52475  12725     99.4    1.128  ! Near Maximum !
-03.0   89    40.74   2814    1758   54091  12819     99.5    1.112  ! Near Maximum !
-02.0   90    41.16   2840    1791   55753  12907     99.7    1.097  ! Near Maximum !
-01.0   91    41.58   2867    1825   57465  12990     99.8    1.081  ! Near Maximum !
+00.0   92    42.00   2894    1860   59226  13067     99.9    1.066  ! Near Maximum !
+01.0   93    42.42   2920    1894   61040  13139    100.0    1.052  !DANGEROUS LOAD-DO NOT USE!
+02.0   94    42.84   2947    1928   62907  13205    100.0    1.037  !DANGEROUS LOAD-DO NOT USE!
+03.0   95    43.26   2973    1963   64830  13266    100.0    1.023  !DANGEROUS LOAD-DO NOT USE!
+04.0   96    43.68   2999    1997   66809  13324    100.0    1.009  !DANGEROUS LOAD-DO NOT USE!
+05.0   97    44.10   3025    2032   68848  13380    100.0    0.995  !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     92    42.00   2956    1941   64579  12854    100.0    1.025  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     92    42.00   2819    1764   53863  13136     98.8    1.114  ! Near Maximum !

 

[bmiller]

Thank you Dr Mike I appreciate it ! The load is for my grandsons rifle