Quickload request

[Bucky5]

Would someone mind running the following Quickload calc for me ???

243 Winchester, 100 gr Sierra spitzer, IMR4350, 2.71 COAL, 24" barrel

I'd like to match the results against my chronograph readings

TIA, Bucky

 

[Leslil]

What are you getting on your chrono?
Sorry I can't help out with CL

 

[DrMike]

Cartridge          : .243 Win.
Bullet             : .243, 100, Sierra SPBT 1560
Useable Case Capaci: 50.612 grain H2O = 3.286 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : IMR 4350

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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

-20.0   75    34.80   2454    1337   32386   8598     92.3    1.531
-18.0   77    35.67   2510    1399   34421   8845     93.3    1.495
-16.0   79    36.54   2566    1462   36576   9083     94.4    1.460
-14.0   81    37.41   2621    1526   38855   9311     95.3    1.419
-12.0   82    38.28   2677    1591   41266   9528     96.1    1.380
-10.0   84    39.15   2732    1657   43816   9734     96.9    1.342
-08.0   86    40.02   2787    1724   46513   9928     97.6    1.305
-06.0   88    40.89   2841    1792   49367  10109     98.2    1.270
-04.0   90    41.76   2895    1861   52386  10276     98.7    1.236  ! Near Maximum !
-02.0   92    42.63   2949    1931   55581  10429     99.1    1.203  ! Near Maximum !
+00.0   94    43.50   3002    2001   58964  10567     99.5    1.172  ! Near Maximum !
+02.0   96    44.37   3055    2072   62546  10689     99.7    1.142  !DANGEROUS LOAD-DO NOT USE!
+04.0   97    45.24   3107    2143   66342  10795     99.9    1.112  !DANGEROUS LOAD-DO NOT USE!
+06.0   99    46.11   3159    2215   70366  10884    100.0    1.084  !DANGEROUS LOAD-DO NOT USE!
+08.0  101    46.98   3210    2288   74634  10958    100.0    1.057  !DANGEROUS LOAD-DO NOT USE!
+10.0  103    47.85   3261    2361   79166  11028    100.0    1.030  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba     94    43.50   3113    2152   68695  10255    100.0    1.096  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     94    43.50   2846    1798   49311  10449     95.4    1.271

 

[Bucky5]

Leslil, My velocities were close, but slightly slower then the Quickload calculations ... however, since I'm using an inexpensive chronograph, that's to be expected. Bucky