280 Ackley QL Request

[wildbill141]

Would someone be so kind as to run the following:
Hornady 175 ELDx
62.8 grn Retumbo
Fed 215
FL sized case
3.330 COL and 3.340 COL
Chrono says 2810 fps at 3.340 COL

Thanks much

 

[TackDriver284]

You forgot to add barrel length, I set it for 24 inches if that is what you have. The last chart is a guide to show max loads and velocity. Work up in increments. Good luck.



Cartridge : .280 Ack Imp
Bullet : .284, 175, Hornady ELD-X 2841
Useable Case Capaci: 61.654 grain H2O = 4.003 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon Retumbo

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   99    56.52   2443    2319   35958  11103     96.4    1.547
-09.0  100    57.15   2474    2379   37216  11239     96.9    1.526
-08.0  101    57.78   2506    2440   38522  11368     97.4    1.499
-07.0  102    58.40   2538    2502   39880  11489     97.9    1.474
-06.0  103    59.03   2569    2565   41293  11603     98.3    1.449
-05.0  104    59.66   2601    2629   42762  11708     98.7    1.425
-04.0  106    60.29   2633    2693   44291  11806     99.0    1.401
-03.0  107    60.92   2664    2758   45884  11895     99.3    1.378
-02.0  108    61.54   2696    2824   47541  11975     99.5    1.355
-01.0  109    62.17   2727    2890   49269  12046     99.7    1.332
+00.0  110    62.80   2759    2957   51053  12108     99.9    1.310
+01.0  111    63.43   2790    3025   52947  12160     99.9    1.288
+02.0  112    64.06   2821    3093   54901  12203    100.0    1.266
+03.0  113    64.68   2852    3161   56950  12237    100.0    1.245  ! Near Maximum !
+04.0  114    65.31   2883    3230   59084  12269    100.0    1.224  ! Near Maximum !
+05.0  115    65.94   2914    3300   61313  12300    100.0    1.204  ! Near Maximum !

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    110    62.80   2909    3288   63224  11516    100.0    1.197  ! Near Maximum !
Data for burning rate decreased by 10% relative to nominal value:
-Ba    110    62.80   2536    2499   40906  11889     93.8    1.455

Cartridge : .280 Ack Imp
Bullet : .284, 175, Hornady ELD-X 2841
Useable Case Capaci: 61.809 grain H2O = 4.013 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon Retumbo

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   99    56.52   2439    2312   35786  11107     96.3    1.551
-09.0  100    57.15   2471    2372   37033  11243     96.9    1.529
-08.0  101    57.78   2502    2433   38330  11373     97.4    1.503
-07.0  102    58.40   2534    2495   39678  11495     97.8    1.478
-06.0  103    59.03   2566    2558   41078  11610     98.3    1.453
-05.0  104    59.66   2597    2621   42536  11717     98.6    1.428
-04.0  105    60.29   2629    2685   44052  11815     99.0    1.405
-03.0  106    60.92   2660    2750   45631  11905     99.3    1.381
-02.0  107    61.54   2692    2815   47274  11987     99.5    1.358
-01.0  109    62.17   2723    2881   48986  12059     99.7    1.336
+00.0  110    62.80   2754    2948   50769  12122     99.8    1.313
+01.0  111    63.43   2786    3015   52630  12176     99.9    1.291
+02.0  112    64.06   2817    3083   54569  12220    100.0    1.270
+03.0  113    64.68   2848    3152   56594  12255    100.0    1.249  ! Near Maximum !
+04.0  114    65.31   2879    3221   58707  12288    100.0    1.228  ! Near Maximum !
+05.0  115    65.94   2910    3290   60915  12319    100.0    1.207  ! Near Maximum !

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    110    62.80   2905    3279   62848  11532    100.0    1.200  ! Near Maximum !
Data for burning rate decreased by 10% relative to nominal value:
-Ba    110    62.80   2532    2490   40659  11891     93.7    1.459

Cartridge : .280 Ack Imp
Bullet : .284, 175, Hornady ELD-X 2841
Useable Case Capaci: 61.809 grain H2O = 4.013 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon Retumbo

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  102    58.50   2539    2505   39888  11513     97.9    1.474
-09.0  103    59.15   2571    2569   41348  11630     98.3    1.448
-08.0  104    59.80   2604    2635   42869  11739     98.7    1.423
-07.0  106    60.45   2637    2702   44454  11839     99.0    1.399
-06.0  107    61.10   2669    2769   46105  11930     99.3    1.374
-05.0  108    61.75   2702    2837   47828  12011     99.6    1.351
-04.0  109    62.40   2734    2906   49624  12083     99.8    1.327
-03.0  110    63.05   2767    2975   51501  12145     99.9    1.305
-02.0  111    63.70   2799    3045   53459  12196    100.0    1.282
-01.0  112    64.35   2831    3115   55506  12237    100.0    1.260  ! Near Maximum !
+00.0  113    65.00   2864    3186   57646  12272    100.0    1.238  ! Near Maximum !
+01.0  115    65.65   2895    3258   59883  12304    100.0    1.217  ! Near Maximum !
+02.0  116    66.30   2927    3330   62225  12336    100.0    1.196  ! Near Maximum !
+03.0  117    66.95   2959    3402   64676  12366    100.0    1.175  !DANGEROUS LOAD-DO NOT USE!
+04.0  118    67.60   2991    3475   67245  12394    100.0    1.155  !DANGEROUS LOAD-DO NOT USE!
+05.0  119    68.25   3022    3549   69937  12421    100.0    1.135  !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    113    65.00   3004    3506   71661  11671    100.0    1.134  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    113    65.00   2648    2724   45980  12405     96.0    1.375

 

[wildbill141]

Thanks much!

 

[wildbill141]

Settled on the following load in the Kimber

175 ELDx
62.7 Retumbo
Nosler FL sized brass
Fed 215
2.625" COL (comparitor)
2846 fps, SD 10

For reference the charge in my Cooper is 63.0.