QL for 264, barrel lengths

Slimfinn

Handloader
Nov 28, 2018
725
402
OK I am looking to see how what QL shows as the difference in velocity between a 24 and 26" barrel with say a 143 ELDx
Not certain on powder
 
Last edited:

DrMike

Ballistician
Nov 8, 2006
35,455
2,217
Code:
Cartridge          : .264 Win. Mag.
Bullet             : .264, 143, Hornady ELD-X 2635 G7
Useable Case Capaci: 74.631 grain H2O = 4.846 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Vihtavuori N570 *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   90    65.07   2779    2451   42993  15438     93.3    1.463
-09.0   91    65.79   2814    2515   44571  15651     94.0    1.438
-08.0   92    66.52   2850    2579   46208  15857     94.6    1.414
-07.0   93    67.24   2886    2644   47899  16057     95.1    1.389
-06.0   94    67.96   2922    2710   49645  16250     95.7    1.366
-05.0   95    68.69   2957    2777   51451  16436     96.2    1.343
-04.0   96    69.41   2993    2845   53322  16614     96.7    1.321  ! Near Maximum !
-03.0   97    70.13   3029    2913   55262  16784     97.2    1.298  ! Near Maximum !
-02.0   98    70.85   3065    2983   57274  16946     97.6    1.276  ! Near Maximum !
-01.0   99    71.58   3101    3053   59361  17099     98.0    1.255  ! Near Maximum !
+00.0  100    72.30   3137    3124   61526  17244     98.3    1.234  ! Near Maximum !
+01.0  101    73.02   3173    3196   63773  17379     98.7    1.213  !DANGEROUS LOAD-DO NOT USE!
+02.0  102    73.75   3208    3268   66105  17505     98.9    1.193  !DANGEROUS LOAD-DO NOT USE!
+03.0  103    74.47   3244    3341   68526  17621     99.2    1.173  !DANGEROUS LOAD-DO NOT USE!
+04.0  104    75.19   3280    3415   71040  17727     99.4    1.154  !DANGEROUS LOAD-DO NOT USE!
+05.0  105    75.92   3315    3490   73651  17823     99.6    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    100    72.30   3316    3491   76119  16822    100.0    1.124  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    100    72.30   2892    2655   47743  16490     91.0    1.379

Code:
Cartridge          : .264 Win. Mag.
Bullet             : .264, 143, Hornady ELD-X 2635 G7
Useable Case Capaci: 74.631 grain H2O = 4.846 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : Vihtavuori N570 *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   90    65.07   2852    2583   42993  14242     94.5    1.522
-09.0   91    65.79   2888    2648   44571  14424     95.0    1.496
-08.0   92    66.52   2924    2714   46208  14600     95.6    1.471
-07.0   93    67.24   2959    2781   47899  14769     96.1    1.446
-06.0   94    67.96   2995    2848   49645  14932     96.6    1.422
-05.0   95    68.69   3031    2917   51451  15087     97.1    1.399
-04.0   96    69.41   3067    2986   53322  15235     97.5    1.376  ! Near Maximum !
-03.0   97    70.13   3103    3056   55262  15376     97.9    1.353  ! Near Maximum !
-02.0   98    70.85   3138    3127   57274  15508     98.3    1.330  ! Near Maximum !
-01.0   99    71.58   3174    3199   59361  15633     98.6    1.308  ! Near Maximum !
+00.0  100    72.30   3210    3271   61526  15749     98.9    1.287  ! Near Maximum !
+01.0  101    73.02   3245    3344   63773  15856     99.1    1.265  !DANGEROUS LOAD-DO NOT USE!
+02.0  102    73.75   3281    3417   66105  15954     99.4    1.245  !DANGEROUS LOAD-DO NOT USE!
+03.0  103    74.47   3316    3492   68526  16043     99.6    1.224  !DANGEROUS LOAD-DO NOT USE!
+04.0  104    75.19   3351    3566   71040  16123     99.7    1.204  !DANGEROUS LOAD-DO NOT USE!
+05.0  105    75.92   3387    3642   73651  16194     99.8    1.184  !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    100    72.30   3383    3634   76119  15241    100.0    1.174  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    100    72.30   2967    2795   47743  15229     92.2    1.436
 

DrMike

Ballistician
Nov 8, 2006
35,455
2,217
Code:
Cartridge          : .264 Win. Mag.
Bullet             : .264, 143, Hornady ELD-X 2635 G7
Useable Case Capaci: 74.631 grain H2O = 4.846 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : IMR 8133 Enduron *C*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    64.26   2827    2537   43157  13410     98.5    1.531
-09.0   97    64.97   2860    2598   44716  13536     98.8    1.505
-08.0   98    65.69   2894    2659   46332  13655     99.1    1.480
-07.0   99    66.40   2927    2721   48005  13766     99.3    1.456
-06.0  100    67.12   2960    2783   49738  13868     99.5    1.432
-05.0  101    67.83   2994    2846   51534  13963     99.7    1.408
-04.0  102    68.54   3027    2909   53395  14048     99.8    1.385  ! Near Maximum !
-03.0  103    69.26   3060    2973   55323  14125     99.9    1.362  ! Near Maximum !
-02.0  104    69.97   3093    3037   57322  14193    100.0    1.340  ! Near Maximum !
-01.0  105    70.69   3125    3101   59394  14251    100.0    1.318  ! Near Maximum !
+00.0  106    71.40   3158    3166   61543  14306    100.0    1.296  ! Near Maximum !
+01.0  107    72.11   3190    3231   63771  14360    100.0    1.276  !DANGEROUS LOAD-DO NOT USE!
+02.0  108    72.83   3222    3297   66083  14412    100.0    1.255  !DANGEROUS LOAD-DO NOT USE!
+03.0  109    73.54   3254    3363   68482  14463    100.0    1.235  !DANGEROUS LOAD-DO NOT USE!
+04.0  110    74.26   3286    3429   70973  14513    100.0    1.215  !DANGEROUS LOAD-DO NOT USE!
+05.0  111    74.97   3318    3496   73559  14562    100.0    1.195  !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    106    71.40   3297    3452   75815  13743    100.0    1.187  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    106    71.40   2947    2757   47682  14504     97.0    1.445

Code:
Cartridge          : .264 Win. Mag.
Bullet             : .264, 143, Hornady ELD-X 2635 G7
Useable Case Capaci: 74.631 grain H2O = 4.846 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 26.0 inch = 660.4 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   80    52.56   2756    2412   46231  10780    100.0    1.490
-09.0   81    53.14   2780    2455   47553  10852    100.0    1.470
-08.0   82    53.73   2805    2498   48906  10923    100.0    1.451
-07.0   82    54.31   2829    2541   50293  10994    100.0    1.431
-06.0   83    54.90   2853    2584   51714  11064    100.0    1.413
-05.0   84    55.48   2877    2627   53170  11133    100.0    1.394  ! Near Maximum !
-04.0   85    56.06   2900    2671   54661  11202    100.0    1.376  ! Near Maximum !
-03.0   86    56.65   2924    2714   56190  11271    100.0    1.359  ! Near Maximum !
-02.0   87    57.23   2947    2758   57755  11339    100.0    1.341  ! Near Maximum !
-01.0   88    57.82   2971    2802   59359  11406    100.0    1.324  ! Near Maximum !
+00.0   89    58.40   2994    2846   61003  11472    100.0    1.308  ! Near Maximum !
+01.0   90    58.98   3017    2890   62688  11538    100.0    1.291  !DANGEROUS LOAD-DO NOT USE!
+02.0   90    59.57   3040    2934   64414  11604    100.0    1.275  !DANGEROUS LOAD-DO NOT USE!
+03.0   91    60.15   3063    2978   66183  11669    100.0    1.260  !DANGEROUS LOAD-DO NOT USE!
+04.0   92    60.74   3085    3023   67996  11733    100.0    1.244  !DANGEROUS LOAD-DO NOT USE!
+05.0   93    61.32   3108    3067   69854  11796    100.0    1.229  !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     89    58.40   3070    2993   70785  11180    100.0    1.225  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     89    58.40   2879    2632   50927  11897    100.0    1.420
 

DrMike

Ballistician
Nov 8, 2006
35,455
2,217
Code:
Cartridge          : .264 Win. Mag.
Bullet             : .264, 143, Hornady ELD-X 2635 G7
Useable Case Capaci: 74.631 grain H2O = 4.846 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 26.0 inch = 660.4 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   93    64.17   2846    2572   42991  13010    100.0    1.509
-09.0   94    64.88   2878    2630   44509  13078    100.0    1.484
-08.0   95    65.60   2910    2689   46084  13143    100.0    1.460
-07.0   96    66.31   2941    2747   47719  13208    100.0    1.437
-06.0   97    67.02   2973    2806   49417  13271    100.0    1.414
-05.0   98    67.74   3004    2865   51180  13334    100.0    1.391
-04.0   99    68.45   3035    2924   53011  13395    100.0    1.368  ! Near Maximum !
-03.0  100    69.16   3066    2984   54914  13456    100.0    1.347  ! Near Maximum !
-02.0  101    69.87   3096    3044   56890  13515    100.0    1.325  ! Near Maximum !
-01.0  102    70.59   3127    3104   58946  13573    100.0    1.304  ! Near Maximum !
+00.0  103    71.30   3157    3165   61084  13631    100.0    1.284  ! Near Maximum !
+01.0  104    72.01   3187    3225   63306  13687    100.0    1.263  !DANGEROUS LOAD-DO NOT USE!
+02.0  105    72.73   3217    3287   65617  13742    100.0    1.243  !DANGEROUS LOAD-DO NOT USE!
+03.0  106    73.44   3247    3348   68027  13795    100.0    1.224  !DANGEROUS LOAD-DO NOT USE!
+04.0  107    74.15   3277    3410   70520  13848    100.0    1.205  !DANGEROUS LOAD-DO NOT USE!
+05.0  108    74.87   3307    3472   73102  13899    100.0    1.186  !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    71.30   3278    3412   75886  13147    100.0    1.179  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    103    71.30   2970    2801   48043  14258     99.6    1.422

Code:
Cartridge          : .264 Win. Mag.
Bullet             : .264, 143, Hornady ELD-X 2635 G7
Useable Case Capaci: 74.631 grain H2O = 4.846 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : Accurate MAGPRO

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   82    60.30   2819    2524   44481  13081     96.8    1.506
-09.0   83    60.97   2851    2580   45931  13224     97.2    1.483
-08.0   84    61.64   2882    2638   47427  13362     97.5    1.460
-07.0   85    62.31   2914    2695   48968  13495     97.9    1.438
-06.0   86    62.98   2945    2754   50558  13622     98.2    1.416
-05.0   87    63.65   2976    2812   52197  13744     98.5    1.395
-04.0   88    64.32   3007    2871   53887  13860     98.8    1.374  ! Near Maximum !
-03.0   89    64.99   3038    2931   55630  13971     99.0    1.354  ! Near Maximum !
-02.0   90    65.66   3069    2991   57429  14075     99.3    1.333  ! Near Maximum !
-01.0   91    66.33   3100    3051   59283  14174     99.4    1.314  ! Near Maximum !
+00.0   92    67.00   3131    3112   61197  14266     99.6    1.294  ! Near Maximum !
+01.0   93    67.67   3161    3173   63171  14351     99.7    1.275  !DANGEROUS LOAD-DO NOT USE!
+02.0   93    68.34   3192    3235   65209  14430     99.8    1.257  !DANGEROUS LOAD-DO NOT USE!
+03.0   94    69.01   3222    3297   67312  14503     99.9    1.238  !DANGEROUS LOAD-DO NOT USE!
+04.0   95    69.68   3253    3359   69482  14568    100.0    1.220  !DANGEROUS LOAD-DO NOT USE!
+05.0   96    70.35   3283    3422   71724  14627    100.0    1.203  !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     92    67.00   3268    3391   73330  13772    100.0    1.194  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     92    67.00   2935    2735   49273  14087     95.0    1.427
 
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