Dr. Mike Quick load request

[George Foster]

6mm Rem
75 HP Sierra
Rem Case
2.860COL
22" Barrel
IMR4064

 

[DrMike]

Cartridge          : 6 mm Rem.
Bullet             : .243, 75, Sierra HP 1510
Useable Case Capaci: 52.314 grain H2O = 3.397 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : IMR 4064

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   86    39.15   3104    1604   44891  11086     96.8    1.089
-09.0   87    39.59   3135    1637   46245  11202     97.1    1.074
-08.0   88    40.02   3167    1670   47637  11314     97.5    1.059
-07.0   89    40.46   3198    1703   49068  11423     97.8    1.044
-06.0   90    40.89   3229    1737   50539  11528     98.1    1.030
-05.0   91    41.33   3261    1771   52051  11629     98.4    1.016
-04.0   92    41.76   3292    1804   53605  11727     98.6    1.002  ! Near Maximum !
-03.0   93    42.20   3323    1839   55204  11820     98.9    0.988  ! Near Maximum !
-02.0   94    42.63   3354    1873   56847  11909     99.1    0.975  ! Near Maximum !
-01.0   95    43.07   3384    1907   58537  11995     99.3    0.962  ! Near Maximum !
+00.0   95    43.50   3415    1942   60275  12076     99.4    0.949  ! Near Maximum !
+01.0   96    43.94   3445    1977   62063  12152     99.6    0.937  !DANGEROUS LOAD-DO NOT USE!
+02.0   97    44.37   3476    2012   63901  12224     99.7    0.924  !DANGEROUS LOAD-DO NOT USE!
+03.0   98    44.81   3506    2047   65793  12292     99.8    0.912  !DANGEROUS LOAD-DO NOT USE!
+04.0   99    45.24   3536    2082   67739  12354     99.9    0.900  !DANGEROUS LOAD-DO NOT USE!
+05.0  100    45.68   3566    2118   69741  12412    100.0    0.888  !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     95    43.50   3485    2023   65143  11945    100.0    0.916  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     95    43.50   3332    1849   55410  12067     97.9    0.987  ! Near Maximum !

That pill will be stepping out there! Should ruin a yodel dog's day.

 

[George Foster]

Thank You Dr. Mike!