Quick Load Request

George Foster

Beginner
Dec 4, 2005
225
85
Dr. Mike, I was wondering if you could run a quick load on this for me. Thank You in advance.

6mm Rem
75HP Sierra
Rem Case
22" Barrel
2.860 OAL
IMR 4831 Powder
 
Code:
Cartridge          : 6 mm Rem.  (SAAMI)
Bullet             : .243, 75, Sierra HP 1510
Useable Case Capaci: 52.312 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 4831

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   97    45.00   3164    1667   45306  12063     96.1    1.099
-09.0   99    45.50   3200    1706   46903  12194     96.5    1.081
-08.0  100    46.00   3237    1745   48557  12320     97.0    1.063
-07.0  101    46.50   3274    1785   50270  12441     97.4    1.046
-06.0  102    47.00   3310    1825   52043  12555     97.8    1.030
-05.0  103    47.50   3347    1865   53879  12664     98.1    1.013
-04.0  104    48.00   3383    1906   55782  12767     98.5    0.997  ! Near Maximum !
-03.0  105    48.50   3420    1947   57752  12864     98.7    0.981  ! Near Maximum !
-02.0  106    49.00   3456    1989   59794  12954     99.0    0.966  ! Near Maximum !
-01.0  107    49.50   3492    2031   61911  13038     99.2    0.951  ! Near Maximum !
+00.0  108    50.00   3528    2073   64105  13115     99.5    0.936  ! Near Maximum !
+01.0  109    50.50   3564    2115   66380  13185     99.6    0.921  !DANGEROUS LOAD-DO NOT USE!
+02.0  110    51.00   3600    2158   68740  13248     99.8    0.906  !DANGEROUS LOAD-DO NOT USE!
+03.0  112    51.50   3636    2201   71188  13304     99.9    0.892  !DANGEROUS LOAD-DO NOT USE!
+04.0  113    52.00   3671    2244   73728  13352     99.9    0.878  !DANGEROUS LOAD-DO NOT USE!
+05.0  114    52.50   3707    2288   76366  13393    100.0    0.865  !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    108    50.00   3615    2177   70617  12922    100.0    0.897  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    108    50.00   3424    1953   57667  13115     97.6    0.981  ! Near Maximum !
 
Thank You so much, during the winter I think about and plan what I want to test and use in the spring and summer. I haven't used IMR4831, IMR4054 in my 6mms since 2007 and plan starting use those powders again this year. That is the reason for the requests I have been making. I have two 6mms that have been my favorite rifles over the years.
 
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