QL can be set up to deliver predictions for a particular barrel time, but it is up to the user to figure out what's safe and practical. It WILL NOT do your thinking for you.

Here is an example:


Code
Cartridge          : 6 mm AR
Bullet             : .243, 90, Nosler Accubond 56357
Useable Case Capaci: 31.772 grain H2O = 2.063 cm³
Cartridge O.A.L. L6: 2.250 inch = 57.15 mm
Barrel Length      : 20.0 inch = 508.0 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Barrel Time: 1.017 milliseconds
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

29 loads produced a Loading Ratio below user-defined minimum of 70%. These powders have been skipped.
Powder type          Filling/Loading Ratio  Charge    Charge   Vel. Prop.Burnt P max  P muzz  B_Time
                                      %     Grains    Gramm   fps     %       psi     psi    ms
---------------------------------  -----------------------------------------------------------------
Accurate 4064                      105.7     30.3     1.96    2872   100.0    57420    9410   1.017  
Accurate 2495                       99.9     28.6     1.85    2868   100.0    57962    9032   1.018  
Alliant Reloder-26                 116.7     36.7     2.38    2859    92.4    51365   11255   1.017  
Accurate 4350                      111.5     32.7     2.12    2851    95.2    53368   10137   1.017  
Alliant Reloder-17                 105.2     32.3     2.09    2851    96.6    51335   10435   1.017  
Alliant Reloder-16                 113.6     32.4     2.10    2849    95.9    51721   10259   1.017  
Norma 203 old                      104.1     30.8     2.00    2842    98.1    54965    9727   1.017  
Vihtavuori N550                    107.9     32.3     2.09    2837    94.8    53021   10130   1.017  
IMR 4895                           100.2     29.3     1.90    2834    97.1    54064    9799   1.017  
Alliant Reloder-23                 122.8     35.2     2.28    2834    95.4    51636   10418   1.017  
Accurate 2520                       96.7     29.9     1.93    2833    99.5    55346    9295   1.017  
Lovex D073.6 Match Rifle            98.9     29.9     1.93    2833    99.5    55346    9295   1.017  
IMR 3031                           100.8     27.6     1.79    2832   100.0    53404    9063   1.017  
Norma MRP                          117.1     35.8     2.32    2829    89.0    51770   10759   1.017  
Hodgdon BL-C2                       95.7     30.6     1.98    2829    98.1    54051    9675   1.017  
IMR 4831                           117.0     32.8     2.13    2827    95.2    53005    9890   1.017  
Norma URP                          110.8     32.1     2.08    2826    94.8    52398   10004   1.017  
Norma 203B                         101.6     29.8     1.93    2824    97.0    54178    9681   1.017  
Hodgdon CFE223                      94.5     30.8     2.00    2822    97.1    52611    9746   1.017  
Alliant Reloder-15                 101.0     29.6     1.92    2821    96.4    54196    9681   1.017  
Winchester 748                      92.6     29.2     1.89    2818    98.8    53107    9409   1.017  


Don't be the darkness.

America will perish while those who should be standing guard are satisfying their lusts.