Quick Load request for 7x57

[HAWKEYESATX]

Hi DrMike!
I was wondering if you could run some QL data for my 7mm Mauser.
I have a Winchester M70 XTR Featherweight, with 22" barrel.
The powder, and bullet weights I have are H4350, IMR 4064, RL-22, RL-26. The bullet weights I have are Hornady 139 gr SP Interlock, and Hornady 162 gr SST's.
I was wondering if upping the pressure to 60k psi would be too much?
Thank you for your help in advance!


Hawk

Sent from my REVVLRY+ using Tapatalk

 

[DrMike]

I would have no trouble whatsoever increasing pressure to a maximum chamber pressure of 64K psi in your Featherweight. Sixty thousand psi is assuredly within safe limits on modern steel and with modern actions.

Cartridge          : 7 x 57 mm Mauser
Bullet             : .284, 139, Hornady SP 2820
Useable Case Capaci: 54.172 grain H2O = 3.517 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 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   87    40.95   2586    2064   43440   9155     97.5    1.233
-09.0   88    41.41   2612    2105   44729   9247     97.8    1.216
-08.0   89    41.86   2637    2147   46054   9337     98.1    1.200
-07.0   90    42.32   2663    2189   47416   9424     98.4    1.183
-06.0   91    42.77   2689    2231   48816   9509     98.6    1.168
-05.0   92    43.23   2714    2274   50255   9590     98.8    1.152
-04.0   93    43.68   2740    2317   51735   9668     99.0    1.137  ! Near Maximum !
-03.0   94    44.14   2765    2360   53256   9744     99.2    1.122  ! Near Maximum !
-02.0   95    44.59   2791    2404   54821   9816     99.4    1.107  ! Near Maximum !
-01.0   96    45.05   2816    2447   56429   9885     99.5    1.092  ! Near Maximum !
+00.0   96    45.50   2841    2491   58084   9951     99.6    1.078  ! Near Maximum !
+01.0   97    45.96   2866    2535   59786  10013     99.8    1.064  !DANGEROUS LOAD-DO NOT USE!
+02.0   98    46.41   2891    2580   61537  10072     99.8    1.050  !DANGEROUS LOAD-DO NOT USE!
+03.0   99    46.87   2916    2624   63338  10127     99.9    1.037  !DANGEROUS LOAD-DO NOT USE!
+04.0  100    47.32   2941    2669   65192  10179    100.0    1.024  !DANGEROUS LOAD-DO NOT USE!
+05.0  101    47.78   2965    2714   67100  10227    100.0    1.011  !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     96    45.50   2942    2672   67693   9625    100.0    1.009  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     96    45.50   2697    2245   48560   9902     95.9    1.168


Cartridge          : 7 x 57 mm Mauser
Bullet             : .284, 139, Hornady SP 2820
Useable Case Capaci: 54.172 grain H2O = 3.517 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Hodgdon H4350 *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   95    46.35   2591    2071   42938   9573     92.2    1.231
-09.0   96    46.87   2619    2118   44349   9695     92.8    1.213
-08.0   97    47.38   2648    2165   45802   9816     93.3    1.195
-07.0   98    47.90   2677    2212   47309   9934     93.7    1.177
-06.0   99    48.41   2706    2260   48860  10049     94.2    1.160
-05.0  100    48.93   2735    2309   50458  10162     94.7    1.143
-04.0  101    49.44   2764    2358   52104  10271     95.1    1.126  ! Near Maximum !
-03.0  102    49.96   2793    2408   53804  10378     95.5    1.109  ! Near Maximum !
-02.0  103    50.47   2822    2458   55561  10482     95.9    1.093  ! Near Maximum !
-01.0  104    50.99   2851    2509   57379  10583     96.3    1.078  ! Near Maximum !
+00.0  105    51.50   2880    2560   59260  10680     96.7    1.062  ! Near Maximum !
+01.0  106    52.02   2909    2612   61207  10774     97.0    1.047  !DANGEROUS LOAD-DO NOT USE!
+02.0  108    52.53   2938    2665   63222  10865     97.4    1.032  !DANGEROUS LOAD-DO NOT USE!
+03.0  109    53.05   2967    2717   65309  10952     97.7    1.017  !DANGEROUS LOAD-DO NOT USE!
+04.0  110    53.56   2996    2771   67471  11035     98.0    1.002  !DANGEROUS LOAD-DO NOT USE!
+05.0  111    54.08   3025    2825   69710  11114     98.2    0.988  !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    105    51.50   3016    2808   70052  10662     99.7    0.988  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    105    51.50   2704    2257   48769  10217     90.0    1.157


Cartridge          : 7 x 57 mm Mauser
Bullet             : .284, 139, Hornady SP 2820
Useable Case Capaci: 54.172 grain H2O = 3.517 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-22 *C

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  101    51.12   2639    2150   40886  10766     89.7    1.248
-09.0  102    51.69   2674    2206   42386  10925     90.4    1.226
-08.0  104    52.26   2708    2263   43949  11081     91.0    1.205
-07.0  105    52.82   2743    2322   45577  11233     91.7    1.185
-06.0  106    53.39   2777    2381   47274  11382     92.4    1.165
-05.0  107    53.96   2812    2441   49043  11526     93.0    1.145
-04.0  108    54.53   2847    2502   50891  11666     93.6    1.125
-03.0  109    55.10   2882    2564   52819  11802     94.2    1.106  ! Near Maximum !
-02.0  110    55.66   2917    2626   54831  11932     94.7    1.087  ! Near Maximum !
-01.0  111    56.23   2952    2690   56934  12058     95.3    1.069  ! Near Maximum !
+00.0  113    56.80   2988    2755   59133  12178     95.8    1.050  ! Near Maximum !
+01.0  114    57.37   3023    2821   61433  12293     96.2    1.032  !DANGEROUS LOAD-DO NOT USE!
+02.0  115    57.94   3059    2888   63840  12402     96.7    1.015  !DANGEROUS LOAD-DO NOT USE!
+03.0  116    58.50   3094    2955   66361  12506     97.1    0.997  !DANGEROUS LOAD-DO NOT USE!
+04.0  117    59.07   3130    3024   69000  12602     97.5    0.980  !DANGEROUS LOAD-DO NOT USE!
+05.0  118    59.64   3166    3094   71770  12693     97.9    0.963  !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    56.80   3166    3094   72915  12207     99.7    0.963  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    113    56.80   2757    2346   47451  11419     87.1    1.161



Cartridge          : 7 x 57 mm Mauser
Bullet             : .284, 139, Hornady SP 2820
Useable Case Capaci: 54.172 grain H2O = 3.517 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-26 *C

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    53.19   2686    2227   39685  11644     94.5    1.260
-09.0  100    53.78   2724    2290   41243  11797     95.2    1.237
-08.0  101    54.37   2761    2354   42871  11942     95.9    1.214
-07.0  102    54.96   2799    2419   44582  12079     96.5    1.191
-06.0  103    55.55   2837    2485   46372  12208     97.0    1.169
-05.0  105    56.15   2875    2552   48248  12328     97.5    1.148
-04.0  106    56.74   2914    2620   50214  12439     98.0    1.126
-03.0  107    57.33   2952    2689   52281  12541     98.4    1.105  ! Near Maximum !
-02.0  108    57.92   2990    2759   54451  12633     98.8    1.084  ! Near Maximum !
-01.0  109    58.51   3028    2830   56730  12715     99.1    1.064  ! Near Maximum !
+00.0  110    59.10   3067    2902   59128  12786     99.4    1.044  ! Near Maximum !
+01.0  111    59.69   3105    2975   61653  12846     99.6    1.024  !DANGEROUS LOAD-DO NOT USE!
+02.0  112    60.28   3143    3049   64304  12895     99.8    1.005  !DANGEROUS LOAD-DO NOT USE!
+03.0  113    60.87   3181    3123   67112  12933     99.9    0.986  !DANGEROUS LOAD-DO NOT USE!
+04.0  115    61.46   3219    3199   70071  12959    100.0    0.967  !DANGEROUS LOAD-DO NOT USE!
+05.0  116    62.06   3257    3275   73193  12974    100.0    0.948  !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    110    59.10   3246    3253   75045  12173    100.0    0.948  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    110    59.10   2804    2427   46386  12408     92.2    1.168

 

[DrMike]

Cartridge          : 7 x 57 mm Mauser
Bullet             : .284, 162, Hornady SST InterLock 28452
Useable Case Capaci: 50.506 grain H2O = 3.279 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-26 *C

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    48.60   2488    2227   39209  10967     96.3    1.355
-09.0   98    49.14   2522    2287   40690  11094     96.9    1.331
-08.0   99    49.68   2555    2348   42263  11213     97.4    1.307
-07.0  100    50.22   2588    2409   43895  11325     97.8    1.284
-06.0  101    50.76   2621    2472   45597  11430     98.2    1.261
-05.0  103    51.30   2655    2535   47386  11526     98.6    1.238
-04.0  104    51.84   2688    2599   49253  11615     98.9    1.216
-03.0  105    52.38   2721    2664   51209  11694     99.2    1.194  ! Near Maximum !
-02.0  106    52.92   2755    2730   53259  11765     99.5    1.173  ! Near Maximum !
-01.0  107    53.46   2788    2796   55409  11827     99.7    1.152  ! Near Maximum !
+00.0  108    54.00   2821    2863   57663  11880     99.8    1.131  ! Near Maximum !
+01.0  109    54.54   2855    2931   60031  11923     99.9    1.111  !DANGEROUS LOAD-DO NOT USE!
+02.0  110    55.08   2888    2999   62518  11957    100.0    1.090  !DANGEROUS LOAD-DO NOT USE!
+03.0  111    55.62   2921    3068   65133  11980    100.0    1.071  !DANGEROUS LOAD-DO NOT USE!
+04.0  112    56.16   2954    3138   67883  12000    100.0    1.051  !DANGEROUS LOAD-DO NOT USE!
+05.0  113    56.70   2987    3208   70780  12018    100.0    1.032  !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    108    54.00   2973    3180   73314  11259    100.0    1.030  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    108    54.00   2594    2420   45186  11760     94.0    1.263



Cartridge          : 7 x 57 mm Mauser
Bullet             : .284, 162, Hornady SST InterLock 28452
Useable Case Capaci: 50.506 grain H2O = 3.279 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-22 *C

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  100    46.98   2457    2171   41151  10261     92.0    1.332
-09.0  101    47.50   2488    2226   42632  10401     92.6    1.310
-08.0  102    48.02   2518    2281   44172  10538     93.2    1.288
-07.0  103    48.55   2549    2338   45774  10671     93.8    1.267
-06.0  104    49.07   2580    2395   47437  10800     94.3    1.246
-05.0  105    49.59   2612    2453   49179  10925     94.9    1.225
-04.0  106    50.11   2643    2512   50990  11046     95.4    1.205
-03.0  108    50.63   2674    2572   52876  11163     95.9    1.185  ! Near Maximum !
-02.0  109    51.16   2705    2632   54843  11275     96.3    1.165  ! Near Maximum !
-01.0  110    51.68   2737    2694   56895  11382     96.7    1.146  ! Near Maximum !
+00.0  111    52.20   2768    2756   59039  11484     97.1    1.127  ! Near Maximum !
+01.0  112    52.72   2799    2819   61276  11581     97.5    1.108  !DANGEROUS LOAD-DO NOT USE!
+02.0  113    53.24   2831    2883   63613  11672     97.9    1.090  !DANGEROUS LOAD-DO NOT USE!
+03.0  114    53.77   2862    2947   66057  11758     98.2    1.072  !DANGEROUS LOAD-DO NOT USE!
+04.0  115    54.29   2894    3013   68614  11838     98.5    1.054  !DANGEROUS LOAD-DO NOT USE!
+05.0  116    54.81   2926    3079   71289  11912     98.8    1.037  !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    111    52.20   2921    3069   72776  11337    100.0    1.036  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    111    52.20   2564    2365   47322  10932     89.5    1.244



Cartridge          : 7 x 57 mm Mauser
Bullet             : .284, 162, Hornady SST InterLock 28452
Useable Case Capaci: 50.506 grain H2O = 3.279 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Hodgdon H4350 *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   93    42.30   2385    2046   42452   8975     93.9    1.330
-09.0   94    42.77   2411    2091   43806   9084     94.3    1.310
-08.0   95    43.24   2437    2136   45197   9191     94.8    1.291
-07.0   96    43.71   2463    2181   46628   9296     95.2    1.273
-06.0   97    44.18   2488    2227   48099   9398     95.6    1.255
-05.0   98    44.65   2514    2274   49617   9498     96.0    1.237
-04.0   99    45.12   2540    2321   51184   9595     96.3    1.219  ! Near Maximum !
-03.0  100    45.59   2566    2368   52802   9689     96.7    1.202  ! Near Maximum !
-02.0  101    46.06   2592    2416   54472   9781     97.0    1.185  ! Near Maximum !
-01.0  102    46.53   2617    2464   56198   9869     97.4    1.169  ! Near Maximum !
+00.0  103    47.00   2643    2513   57981   9955     97.7    1.152  ! Near Maximum !
+01.0  104    47.47   2669    2562   59823  10037     97.9    1.136  !DANGEROUS LOAD-DO NOT USE!
+02.0  105    47.94   2695    2612   61727  10117     98.2    1.120  !DANGEROUS LOAD-DO NOT USE!
+03.0  106    48.41   2720    2662   63694  10192     98.5    1.105  !DANGEROUS LOAD-DO NOT USE!
+04.0  107    48.88   2746    2712   65729  10265     98.7    1.090  !DANGEROUS LOAD-DO NOT USE!
+05.0  108    49.35   2772    2763   67834  10334     98.9    1.075  !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    103    47.00   2760    2740   68398   9833    100.0    1.074  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    103    47.00   2488    2227   47802   9620     91.6    1.254



Cartridge          : 7 x 57 mm Mauser
Bullet             : .284, 162, Hornady SST InterLock 28452
Useable Case Capaci: 50.506 grain H2O = 3.279 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 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    37.80   2399    2070   44363   8555     98.8    1.313
-09.0   87    38.22   2422    2110   45659   8633     99.0    1.296
-08.0   88    38.64   2445    2151   46990   8708     99.2    1.279
-07.0   89    39.06   2468    2192   48357   8781     99.3    1.262
-06.0   90    39.48   2491    2233   49762   8850     99.5    1.245
-05.0   91    39.90   2514    2274   51205   8917     99.6    1.229  ! Near Maximum !
-04.0   92    40.32   2537    2315   52687   8981     99.7    1.213  ! Near Maximum !
-03.0   93    40.74   2560    2357   54210   9042     99.8    1.197  ! Near Maximum !
-02.0   94    41.16   2582    2399   55774   9100     99.9    1.182  ! Near Maximum !
-01.0   95    41.58   2605    2440   57382   9155     99.9    1.167  ! Near Maximum !
+00.0   96    42.00   2627    2483   59035   9207    100.0    1.152  ! Near Maximum !
+01.0   96    42.42   2649    2525   60733   9255    100.0    1.137  !DANGEROUS LOAD-DO NOT USE!
+02.0   97    42.84   2672    2567   62479   9301    100.0    1.123  !DANGEROUS LOAD-DO NOT USE!
+03.0   98    43.26   2694    2610   64274   9346    100.0    1.109  !DANGEROUS LOAD-DO NOT USE!
+04.0   99    43.68   2716    2653   66120   9390    100.0    1.095  !DANGEROUS LOAD-DO NOT USE!
+05.0  100    44.10   2738    2696   68018   9434    100.0    1.082  !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     96    42.00   2710    2641   68635   8878    100.0    1.082  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     96    42.00   2505    2257   49474   9316     97.5    1.245

 

[HAWKEYESATX]

Thank you so very much DrMike!
I so greatly appreciate you, and your QL program.
You have a lot of great personal knowledge as well.



Hawk

Sent from my REVVLRY+ using Tapatalk

 

[HAWKEYESATX]

I would have no trouble whatsoever increasing pressure to a maximum chamber pressure of 64K psi in your Featherweight. Sixty thousand psi is assuredly within safe limits on modern steel and with modern actions.

Cartridge          : 7 x 57 mm Mauser
Bullet             : .284, 139, Hornady SP 2820
Useable Case Capaci: 54.172 grain H2O = 3.517 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 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   87    40.95   2586    2064   43440   9155     97.5    1.233
-09.0   88    41.41   2612    2105   44729   9247     97.8    1.216
-08.0   89    41.86   2637    2147   46054   9337     98.1    1.200
-07.0   90    42.32   2663    2189   47416   9424     98.4    1.183
-06.0   91    42.77   2689    2231   48816   9509     98.6    1.168
-05.0   92    43.23   2714    2274   50255   9590     98.8    1.152
-04.0   93    43.68   2740    2317   51735   9668     99.0    1.137  ! Near Maximum !
-03.0   94    44.14   2765    2360   53256   9744     99.2    1.122  ! Near Maximum !
-02.0   95    44.59   2791    2404   54821   9816     99.4    1.107  ! Near Maximum !
-01.0   96    45.05   2816    2447   56429   9885     99.5    1.092  ! Near Maximum !
+00.0   96    45.50   2841    2491   58084   9951     99.6    1.078  ! Near Maximum !
+01.0   97    45.96   2866    2535   59786  10013     99.8    1.064  !DANGEROUS LOAD-DO NOT USE!
+02.0   98    46.41   2891    2580   61537  10072     99.8    1.050  !DANGEROUS LOAD-DO NOT USE!
+03.0   99    46.87   2916    2624   63338  10127     99.9    1.037  !DANGEROUS LOAD-DO NOT USE!
+04.0  100    47.32   2941    2669   65192  10179    100.0    1.024  !DANGEROUS LOAD-DO NOT USE!
+05.0  101    47.78   2965    2714   67100  10227    100.0    1.011  !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     96    45.50   2942    2672   67693   9625    100.0    1.009  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     96    45.50   2697    2245   48560   9902     95.9    1.168


Cartridge          : 7 x 57 mm Mauser
Bullet             : .284, 139, Hornady SP 2820
Useable Case Capaci: 54.172 grain H2O = 3.517 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Hodgdon H4350 *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   95    46.35   2591    2071   42938   9573     92.2    1.231
-09.0   96    46.87   2619    2118   44349   9695     92.8    1.213
-08.0   97    47.38   2648    2165   45802   9816     93.3    1.195
-07.0   98    47.90   2677    2212   47309   9934     93.7    1.177
-06.0   99    48.41   2706    2260   48860  10049     94.2    1.160
-05.0  100    48.93   2735    2309   50458  10162     94.7    1.143
-04.0  101    49.44   2764    2358   52104  10271     95.1    1.126  ! Near Maximum !
-03.0  102    49.96   2793    2408   53804  10378     95.5    1.109  ! Near Maximum !
-02.0  103    50.47   2822    2458   55561  10482     95.9    1.093  ! Near Maximum !
-01.0  104    50.99   2851    2509   57379  10583     96.3    1.078  ! Near Maximum !
+00.0  105    51.50   2880    2560   59260  10680     96.7    1.062  ! Near Maximum !
+01.0  106    52.02   2909    2612   61207  10774     97.0    1.047  !DANGEROUS LOAD-DO NOT USE!
+02.0  108    52.53   2938    2665   63222  10865     97.4    1.032  !DANGEROUS LOAD-DO NOT USE!
+03.0  109    53.05   2967    2717   65309  10952     97.7    1.017  !DANGEROUS LOAD-DO NOT USE!
+04.0  110    53.56   2996    2771   67471  11035     98.0    1.002  !DANGEROUS LOAD-DO NOT USE!
+05.0  111    54.08   3025    2825   69710  11114     98.2    0.988  !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    105    51.50   3016    2808   70052  10662     99.7    0.988  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    105    51.50   2704    2257   48769  10217     90.0    1.157


Cartridge          : 7 x 57 mm Mauser
Bullet             : .284, 139, Hornady SP 2820
Useable Case Capaci: 54.172 grain H2O = 3.517 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-22 *C

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  101    51.12   2639    2150   40886  10766     89.7    1.248
-09.0  102    51.69   2674    2206   42386  10925     90.4    1.226
-08.0  104    52.26   2708    2263   43949  11081     91.0    1.205
-07.0  105    52.82   2743    2322   45577  11233     91.7    1.185
-06.0  106    53.39   2777    2381   47274  11382     92.4    1.165
-05.0  107    53.96   2812    2441   49043  11526     93.0    1.145
-04.0  108    54.53   2847    2502   50891  11666     93.6    1.125
-03.0  109    55.10   2882    2564   52819  11802     94.2    1.106  ! Near Maximum !
-02.0  110    55.66   2917    2626   54831  11932     94.7    1.087  ! Near Maximum !
-01.0  111    56.23   2952    2690   56934  12058     95.3    1.069  ! Near Maximum !
+00.0  113    56.80   2988    2755   59133  12178     95.8    1.050  ! Near Maximum !
+01.0  114    57.37   3023    2821   61433  12293     96.2    1.032  !DANGEROUS LOAD-DO NOT USE!
+02.0  115    57.94   3059    2888   63840  12402     96.7    1.015  !DANGEROUS LOAD-DO NOT USE!
+03.0  116    58.50   3094    2955   66361  12506     97.1    0.997  !DANGEROUS LOAD-DO NOT USE!
+04.0  117    59.07   3130    3024   69000  12602     97.5    0.980  !DANGEROUS LOAD-DO NOT USE!
+05.0  118    59.64   3166    3094   71770  12693     97.9    0.963  !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    56.80   3166    3094   72915  12207     99.7    0.963  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    113    56.80   2757    2346   47451  11419     87.1    1.161



Cartridge          : 7 x 57 mm Mauser
Bullet             : .284, 139, Hornady SP 2820
Useable Case Capaci: 54.172 grain H2O = 3.517 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-26 *C

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    53.19   2686    2227   39685  11644     94.5    1.260
-09.0  100    53.78   2724    2290   41243  11797     95.2    1.237
-08.0  101    54.37   2761    2354   42871  11942     95.9    1.214
-07.0  102    54.96   2799    2419   44582  12079     96.5    1.191
-06.0  103    55.55   2837    2485   46372  12208     97.0    1.169
-05.0  105    56.15   2875    2552   48248  12328     97.5    1.148
-04.0  106    56.74   2914    2620   50214  12439     98.0    1.126
-03.0  107    57.33   2952    2689   52281  12541     98.4    1.105  ! Near Maximum !
-02.0  108    57.92   2990    2759   54451  12633     98.8    1.084  ! Near Maximum !
-01.0  109    58.51   3028    2830   56730  12715     99.1    1.064  ! Near Maximum !
+00.0  110    59.10   3067    2902   59128  12786     99.4    1.044  ! Near Maximum !
+01.0  111    59.69   3105    2975   61653  12846     99.6    1.024  !DANGEROUS LOAD-DO NOT USE!
+02.0  112    60.28   3143    3049   64304  12895     99.8    1.005  !DANGEROUS LOAD-DO NOT USE!
+03.0  113    60.87   3181    3123   67112  12933     99.9    0.986  !DANGEROUS LOAD-DO NOT USE!
+04.0  115    61.46   3219    3199   70071  12959    100.0    0.967  !DANGEROUS LOAD-DO NOT USE!
+05.0  116    62.06   3257    3275   73193  12974    100.0    0.948  !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    110    59.10   3246    3253   75045  12173    100.0    0.948  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    110    59.10   2804    2427   46386  12408     92.2    1.168

Hi DrMike!

I was curious if you could add StaBall 6.5 as a powder, and same perimeters as above.
I actually found the 139 gr bullets I bought a while back, and saw they are SST's instead of SPBT.
Sorry to be asking again.


Hawk

Sent from my REVVLRY+ using Tapatalk

 

[DrMike]

Unfortunately, I don't have StaBall in my data base. What I do have I'm willing to share with you.

Cartridge          : 7 x 57 mm Mauser (SAAMI)
Bullet             : .284, 139, Hornady SST InterLock 28202
Useable Case Capaci: 53.346 grain H2O = 3.464 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 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   87    40.59   2590    2070   44192   9131     97.8    1.230
-09.0   88    41.04   2615    2111   45510   9221     98.1    1.213
-08.0   89    41.49   2641    2153   46865   9309     98.3    1.196
-07.0   90    41.94   2667    2195   48258   9394     98.6    1.180
-06.0   91    42.39   2692    2237   49690   9476     98.8    1.164
-05.0   92    42.85   2718    2280   51162   9555     99.0    1.149  ! Near Maximum !
-04.0   93    43.30   2743    2323   52677   9630     99.2    1.133  ! Near Maximum !
-03.0   94    43.75   2769    2366   54234   9703     99.4    1.118  ! Near Maximum !
-02.0   95    44.20   2794    2410   55836   9773     99.5    1.103  ! Near Maximum !
-01.0   96    44.65   2819    2453   57483   9839     99.6    1.089  ! Near Maximum !
+00.0   97    45.10   2844    2497   59178   9902     99.7    1.075  ! Near Maximum !
+01.0   98    45.55   2869    2541   60922   9961     99.8    1.061  !DANGEROUS LOAD-DO NOT USE!
+02.0   99    46.00   2894    2585   62717  10017     99.9    1.047  !DANGEROUS LOAD-DO NOT USE!
+03.0  100    46.45   2919    2630   64564  10070    100.0    1.034  !DANGEROUS LOAD-DO NOT USE!
+04.0  101    46.90   2944    2675   66465  10118    100.0    1.020  !DANGEROUS LOAD-DO NOT USE!
+05.0  102    47.36   2968    2719   68422  10164    100.0    1.007  !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     97    45.10   2943    2674   68959   9567    100.0    1.007  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     97    45.10   2702    2254   49476   9883     96.2    1.164


Cartridge          : 7 x 57 mm Mauser (SAAMI)
Bullet             : .284, 139, Hornady SST InterLock 28202
Useable Case Capaci: 53.346 grain H2O = 3.464 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Hodgdon H4350 *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   94    45.45   2569    2036   42406   9451     92.1    1.245
-09.0   96    45.96   2597    2082   43788   9573     92.6    1.226
-08.0   97    46.46   2626    2128   45210   9692     93.1    1.208
-07.0   98    46.97   2654    2175   46693   9809     93.6    1.190
-06.0   99    47.47   2683    2222   48219   9924     94.1    1.173
-05.0  100    47.98   2712    2270   49790  10036     94.6    1.156
-04.0  101    48.48   2740    2318   51408  10145     95.0    1.139  ! Near Maximum !
-03.0  102    48.99   2769    2367   53076  10251     95.4    1.122  ! Near Maximum !
-02.0  103    49.49   2798    2416   54800  10355     95.8    1.106  ! Near Maximum !
-01.0  104    50.00   2827    2466   56583  10455     96.2    1.090  ! Near Maximum !
+00.0  105    50.50   2855    2516   58427  10552     96.6    1.074  ! Near Maximum !
+01.0  106    51.01   2884    2567   60336  10646     96.9    1.059  !DANGEROUS LOAD-DO NOT USE!
+02.0  107    51.51   2913    2618   62311  10736     97.3    1.044  !DANGEROUS LOAD-DO NOT USE!
+03.0  108    52.02   2941    2670   64355  10823     97.6    1.029  !DANGEROUS LOAD-DO NOT USE!
+04.0  109    52.52   2970    2723   66472  10907     97.9    1.014  !DANGEROUS LOAD-DO NOT USE!
+05.0  110    53.03   2999    2775   68664  10986     98.2    1.000  !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    105    50.50   2991    2760   69071  10543     99.7    1.000  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    105    50.50   2680    2217   48084  10087     89.9    1.171


Cartridge          : 7 x 57 mm Mauser (SAAMI)
Bullet             : .284, 139, Hornady SST InterLock 28202
Useable Case Capaci: 53.346 grain H2O = 3.464 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-22 *C

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  101    50.31   2627    2130   40783  10678     89.7    1.255
-09.0  102    50.87   2661    2185   42276  10836     90.4    1.234
-08.0  103    51.43   2695    2242   43833  10990     91.1    1.213
-07.0  105    51.99   2729    2299   45455  11141     91.8    1.192
-06.0  106    52.55   2764    2357   47145  11287     92.4    1.172
-05.0  107    53.11   2798    2417   48907  11430     93.0    1.152
-04.0  108    53.66   2833    2477   50745  11569     93.6    1.132
-03.0  109    54.22   2868    2538   52665  11703     94.2    1.113  ! Near Maximum !
-02.0  110    54.78   2903    2600   54669  11832     94.8    1.094  ! Near Maximum !
-01.0  111    55.34   2938    2664   56761  11956     95.3    1.075  ! Near Maximum !
+00.0  112    55.90   2973    2728   58949  12075     95.8    1.057  ! Near Maximum !
+01.0  114    56.46   3008    2793   61237  12189     96.3    1.039  !DANGEROUS LOAD-DO NOT USE!
+02.0  115    57.02   3043    2858   63634  12297     96.7    1.021  !DANGEROUS LOAD-DO NOT USE!
+03.0  116    57.58   3079    2925   66139  12399     97.1    1.004  !DANGEROUS LOAD-DO NOT USE!
+04.0  117    58.14   3114    2993   68768  12495     97.5    0.986  !DANGEROUS LOAD-DO NOT USE!
+05.0  118    58.70   3150    3062   71521  12584     97.9    0.970  !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    112    55.90   3150    3062   72684  12099     99.7    0.969  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    112    55.90   2743    2323   47307  11327     87.2    1.169


Cartridge          : 7 x 57 mm Mauser (SAAMI)
Bullet             : .284, 139, Hornady SST InterLock 28202
Useable Case Capaci: 53.346 grain H2O = 3.464 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-26 *C

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    52.38   2675    2209   39661  11557     94.6    1.266
-09.0  100    52.96   2713    2271   41217  11707     95.3    1.243
-08.0  101    53.54   2750    2335   42844  11850     95.9    1.220
-07.0  102    54.13   2788    2399   44551  11985     96.5    1.198
-06.0  103    54.71   2826    2464   46337  12112     97.1    1.175
-05.0  105    55.29   2864    2531   48211  12230     97.6    1.153
-04.0  106    55.87   2901    2598   50175  12340     98.0    1.132
-03.0  107    56.45   2939    2667   52237  12439     98.5    1.111  ! Near Maximum !
-02.0  108    57.04   2977    2736   54404  12529     98.8    1.090  ! Near Maximum !
-01.0  109    57.62   3015    2806   56680  12609     99.1    1.069  ! Near Maximum !
+00.0  110    58.20   3053    2877   59073  12679     99.4    1.049  ! Near Maximum !
+01.0  111    58.78   3091    2949   61592  12738     99.6    1.030  !DANGEROUS LOAD-DO NOT USE!
+02.0  112    59.36   3129    3022   64246  12786     99.8    1.010  !DANGEROUS LOAD-DO NOT USE!
+03.0  113    59.95   3167    3096   67043  12822     99.9    0.991  !DANGEROUS LOAD-DO NOT USE!
+04.0  114    60.53   3205    3171   69996  12847    100.0    0.972  !DANGEROUS LOAD-DO NOT USE!
+05.0  116    61.11   3243    3246   73107  12860    100.0    0.954  !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    110    58.20   3232    3223   74968  12066    100.0    0.953  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    110    58.20   2793    2407   46346  12318     92.3    1.174

 

[SJB358]

Maybe use the Hodgdon 7-08 Staball data to work up the load. Pretty similar case capacity and a max load for the slightly smaller case should be plenty safe in the X57 case. I believe Hodgdon has some excellent data using the powder.

 

[HAWKEYESATX]

DrMike:

Thank you so very much!
I really appreciate it!


Hawk

Sent from my REVVLRY+ using Tapatalk

 

[HAWKEYESATX]

Maybe use the Hodgdon 7-08 Staball data to work up the load. Pretty similar case capacity and a max load for the slightly smaller case should be plenty safe in the X57 case. I believe Hodgdon has some excellent data using the powder.

Thank you Scottie!


Hawk

Sent from my REVVLRY+ using Tapatalk