QuickLoad questions thread...

[Ridgerunner665]

Another example...in this one the powder is calibrated on both, but the top is using the default bullet measurements....the bottom is using measurements I took myself....the only difference is in the bullet specs.

Uncalibrated...

Cartridge          : .280 Ack Imp
Bullet             : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 64.473 grain H2O = 4.186 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Norma MRP ?

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.834% 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

-08.3   89    55.00   2766    2719   47554  11472     99.7    1.329
-07.5   89    55.50   2791    2767   48902  11537     99.8    1.312
-06.7   90    56.00   2815    2815   50287  11599     99.9    1.295
-05.8   91    56.50   2839    2863   51710  11656    100.0    1.279
-05.0   92    57.00   2863    2912   53173  11708    100.0    1.262
-04.2   93    57.50   2887    2961   54677  11757    100.0    1.246
-03.3   94    58.00   2911    3010   56222  11803    100.0    1.231  ! Near Maximum !
-02.5   94    58.50   2934    3059   57811  11849    100.0    1.215  ! Near Maximum !
-01.7   95    59.00   2958    3109   59445  11894    100.0    1.200  ! Near Maximum !
-00.8   96    59.50   2981    3158   61125  11939    100.0    1.185  ! Near Maximum !
+00.0   97    60.00   3005    3208   62852  11983    100.0    1.170  ! Near Maximum !
+00.8   98    60.50   3028    3258   64629  12026    100.0    1.156  !DANGEROUS LOAD-DO NOT USE!
+01.7   98    61.00   3051    3308   66456  12069    100.0    1.142  !DANGEROUS LOAD-DO NOT USE!
+02.5   99    61.50   3075    3358   68337  12111    100.0    1.128  !DANGEROUS LOAD-DO NOT USE!
+03.3  100    62.00   3098    3409   70272  12153    100.0    1.114  !DANGEROUS LOAD-DO NOT USE!
+04.2  101    62.50   3121    3460   72263  12193    100.0    1.100  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba     97    60.00   3066    3339   69588  11741    100.0    1.123  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     97    60.00   2929    3048   56188  12258     99.9    1.225  ! Near Maximum !

Calibrated...bullet length is .005" shorter than above, no other changes....
My chrono data=

58.5 = 2,956 fps
59 = 2,972 fps
59.5 = 2,989 fps
60 = 3,003 fps

Cartridge          : .280 Ack Imp
Bullet             : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 64.553 grain H2O = 4.191 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Norma MRP ?

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.834% 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

-08.3   89    55.00   2765    2716   47446  11477     99.7    1.330
-07.5   89    55.50   2789    2763   48790  11543     99.8    1.313
-06.7   90    56.00   2813    2812   50170  11605     99.9    1.296
-05.8   91    56.50   2837    2860   51588  11662    100.0    1.280
-05.0   92    57.00   2861    2908   53046  11715    100.0    1.264
-04.2   93    57.50   2885    2957   54544  11763    100.0    1.248
-03.3   93    58.00   2909    3006   56084  11810    100.0    1.232  ! Near Maximum !
-02.5   94    58.50   2933    3055   57667  11856    100.0    1.217  ! Near Maximum !
-01.7   95    59.00   2956    3105   59294  11901    100.0    1.201  ! Near Maximum !
-00.8   96    59.50   2980    3154   60968  11946    100.0    1.186  ! Near Maximum !
+00.0   97    60.00   3003    3204   62688  11990    100.0    1.172  ! Near Maximum !
+00.8   97    60.50   3026    3254   64458  12034    100.0    1.157  !DANGEROUS LOAD-DO NOT USE!
+01.7   98    61.00   3049    3304   66278  12077    100.0    1.143  !DANGEROUS LOAD-DO NOT USE!
+02.5   99    61.50   3073    3354   68151  12119    100.0    1.129  !DANGEROUS LOAD-DO NOT USE!
+03.3  100    62.00   3096    3405   70078  12160    100.0    1.115  !DANGEROUS LOAD-DO NOT USE!
+04.2  101    62.50   3119    3455   72060  12201    100.0    1.101  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba     97    60.00   3064    3335   69404  11748    100.0    1.124  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     97    60.00   2927    3044   56044  12264     99.9    1.227  ! Near Maximum !

 

[Ridgerunner665]

To post QL data to the forum so it formats as above and is easily readable...

 

[muleman]

Thanks Lynn! I found the "code" button.

 

[Ridgerunner665]

Thanks Lynn! I found the "code" button.

I forgot there was a button for it...lol...sorry...I tend to do things the hard way sometimes

 

[Wyo7200]

One thing that has helped me in QL is changing the weighting factor to the "most correct" number. Helped a ton with 25/06, 7 RUM and 300 WIN.

I'm currently working on a load for my 300 blkout and attempting to get QL calibrated enough to get some consistent estimates. The difference between un-calibrated and and calibrated is extreme... My homemade cases are 23-24H2O grains, compared to actual 300blkout cases at 25-26gr. I'd be ~8k over SAMMI if I played it safe and started at the published min 18.8gr. What's scary is that there was no pressure signs at 18.4gr while getting group data... I thought I was near the low node based off a previous loads burn rate. When I chronographed the chosen load, it blew my mind- 2350fps. A change of bullet and increase of charge resulted in a 7% burn rate increase to match the chrono.

Here's a calibration comparison of my 300 blkout, looking at the recommended published charge range:

Uncalibrated:

Cartridge          : .300 AAC Blackout (SAAMI)
Bullet             : .308, 110, Hornady V-MAX Measured 23010
Useable Case Capaci: 21.469 grain H2O = 1.394 cm³
Cartridge O.A.L. L6: 2.100 inch = 53.34 mm
Barrel Length      : 16.0 inch = 406.4 mm
Powder             : Hodgdon H110

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    18.27   2127    1105   36153   4608     94.5    0.974
-09.0   87    18.47   2149    1128   37301   4660     94.9    0.962
-08.0   88    18.68   2171    1152   38487   4710     95.3    0.948
-07.0   89    18.88   2194    1176   39711   4759     95.6    0.935
-06.0   90    19.08   2216    1200   40976   4807     96.0    0.922
-05.0   91    19.29   2239    1224   42282   4854     96.4    0.910
-04.0   92    19.49   2261    1248   43633   4900     96.7    0.897
-03.0   93    19.69   2283    1273   45029   4944     97.0    0.885
-02.0   94    19.89   2305    1298   46471   4986     97.3    0.873
-01.0   95    20.10   2327    1323   47963   5027     97.6    0.861  ! Near Maximum !
+00.0   96    20.30   2350    1348   49506   5067     97.9    0.850  ! Near Maximum !
+01.0   97    20.50   2372    1374   51102   5105     98.1    0.838  ! Near Maximum !
+02.0   98    20.71   2394    1400   52753   5142     98.4    0.827  ! Near Maximum !
+03.0   98    20.91   2416    1425   54462   5177     98.6    0.816  !DANGEROUS LOAD-DO NOT USE!
+04.0   99    21.11   2438    1451   56231   5210     98.8    0.805  !DANGEROUS LOAD-DO NOT USE!
+05.0  100    21.32   2460    1478   58063   5242     99.0    0.795  !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    20.30   2455    1472   59390   4955    100.0    0.790  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     96    20.30   2207    1190   40069   4941     92.0    0.928

Calibrated to my burn rate- Even with the change of case capacity, I am still needing to increase the Burn rate 5-15% to match velocities:

Cartridge          : .300 AAC Blackout (SAAMI)
Bullet             : .308, 110, Hornady V-MAX Measured 23010
Useable Case Capaci: 20.096 grain H2O = 1.305 cm³
Cartridge O.A.L. L6: 2.100 inch = 53.34 mm
Barrel Length      : 16.0 inch = 406.4 mm
Powder             : Hodgdon H110 300BLK 110GR FIO

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   92    18.27   2347    1346   57802   4320    100.0    0.815  !DANGEROUS LOAD-DO NOT USE!
-09.0   93    18.47   2368    1370   59789   4340    100.0    0.804  !DANGEROUS LOAD-DO NOT USE!
-08.0   94    18.68   2389    1394   61846   4359    100.0    0.794  !DANGEROUS LOAD-DO NOT USE!
-07.0   95    18.88   2409    1418   63977   4378    100.0    0.783  !DANGEROUS LOAD-DO NOT USE!
-06.0   96    19.08   2430    1442   66183   4397    100.0    0.773  !DANGEROUS LOAD-DO NOT USE!
-05.0   97    19.29   2450    1466   68469   4415    100.0    0.763  !DANGEROUS LOAD-DO NOT USE!
-04.0   98    19.49   2470    1491   70838   4433    100.0    0.753  !DANGEROUS LOAD-DO NOT USE!
-03.0   99    19.69   2491    1515   73294   4450    100.0    0.743  !DANGEROUS LOAD-DO NOT USE!
-02.0  100    19.89   2511    1540   75842   4467    100.0    0.734  !DANGEROUS LOAD-DO NOT USE!
-01.0  101    20.10   2531    1564   78485   4484    100.0    0.725  !DANGEROUS LOAD-DO NOT USE!
+00.0  102    20.30   2551    1589   81227   4500    100.0    0.715  !DANGEROUS LOAD-DO NOT USE!
+01.0  103    20.50   2571    1614   84075   4516    100.0    0.707  !DANGEROUS LOAD-DO NOT USE!
+02.0  104    20.71   2590    1639   87034   4531    100.0    0.698  !DANGEROUS LOAD-DO NOT USE!
+03.0  105    20.91   2610    1664   90108   4546    100.0    0.689  !DANGEROUS LOAD-DO NOT USE!
+04.0  106    21.11   2630    1689   93304   4561    100.0    0.681  !DANGEROUS LOAD-DO NOT USE!
+05.0  107    21.32   2650    1715   96629   4574    100.0    0.672  !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    102    20.30   2606    1659   95698   4337    100.0    0.680  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    102    20.30   2466    1485   66858   4744    100.0    0.766  !DANGEROUS LOAD-DO NOT USE!

 

[Ridgerunner665]

Something is bad wrong with that...what are you using for weighting factor?

And Noslers published minimum is waaaay below 18.4 grains.... http://www.nosler.com/nosler-load-data/ ... -blackout/

With the rounds that I've worked with on QL (mostly 30-06, 308, 243, 280 Ackley, and 270 Win)...I've never seen the need to mess with the weighting factor. I think the reason for that is because the weighting factor is fairly consistent based on shoulder angle and powder burn speed range....primarily powder burn speed range (slow, medium, fast).

That isn't to say there is no need for the weighting factor...I'm sure its in there somewhere, just that I haven't seen it yet.


I'd find some factory ammo, chrono that to see how the chrono is behaving, or use another round/rifle that you are SURE of the velocity...then chrono my reloads...the high velocity and lack of pressure signs make me want to think your chrono is lying to you, they do that...a lot.

Having said that...rounds that operate in the lower pressure ranges make reading brass a useless endeavor, brass doesn't start showing pressure until nearly 70,000 psi...and 70,000 psi in a firearm that is designed for 40-55,000 psi can be a very unpleasant experience!

The 45-70 comes to mind...I've loaded and shot them at a little over 40,000 psi in Marlins and Rugers, no pressure signs whatsover....drop one of those rounds in an old trapdoor and you just had a really bad day.

The same can be said of some of the popular old military surplus rifles...small ring Mausers for example...I'm far from an expert on surplus rifles, never been interested in them...but I do know some won't stand modern pressures...so be VERY careful with them, waiting for pressure signs on brass with these types of rifles will get you killed, or at least missing some eyes and fingers.

 

[Wyo7200]

I agree, something's up. Weighing factor only changes velocity by 10fps though. I'm using .7 (from the .6 that QL has.) due to the almost non existent shoulder. If I take it down, I have to adjust the BR. I should have noted I'm referencing Hodgdon data, which starts at 18.8 and goes to 20.

The magnetospeed I'm using is consistent- at least with the 6.5 creedmoor rounds I was double checking that day. That's why I'm questioning QL's estimate capability with large amounts of pistol powder.

For the weighting factor- try these two loads... I think QL lists them as .7. Should be .3 or close to .3 according to the overbore cartridge lists and QL recommendations in the pop up.

Velocity for both rounds was confirmed by 35 ohler and magnetospeed.

300 RUM. 91.0 retumbo, 200 AccuBond, 3225 fps, 3.580 oal.

7mm RUM. 175 swift a-frame. 99 gr US 869. 3160 fps. 3.590 OAL.

Both 26" barrels. H2o capacity as listed by QL. One will get you 113k psi and the other 73k psi before you adjust the weighting factor.

I'll post pics when I get on my computer of what my QL estimates. Pics or it didn't happen...

 

[Wyo7200]

Here is the calibrated 7 RUM using .33 weighting factor:

Cartridge          : 7 mm Rem Ultra Mag
Bullet             : .284, 175, Swift A-Frame SS
Useable Case Capaci: 103.359 grain H2O = 6.711 cm³
Cartridge O.A.L. L6: 3.550 inch = 90.17 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : Hodgdon US 869 ?

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   88    89.10   2820    3091   42991  15406     91.7    1.526
-09.0   89    90.09   2855    3167   44371  15631     92.2    1.507
-08.0   90    91.08   2889    3244   45799  15852     92.8    1.489
-07.0   91    92.07   2924    3322   47276  16070     93.4    1.470
-06.0   92    93.06   2958    3401   48804  16283     93.9    1.452
-05.0   93    94.05   2993    3481   50385  16493     94.4    1.432
-04.0   94    95.04   3028    3563   52020  16698     94.9    1.410
-03.0   95    96.03   3063    3646   53713  16898     95.4    1.386
-02.0   96    97.02   3098    3730   55465  17093     95.8    1.365  ! Near Maximum !
-01.0   97    98.01   3133    3815   57279  17283     96.3    1.343  ! Near Maximum !
+00.0   98    99.00   3169    3902   59157  17467     96.7    1.322  ! Near Maximum !
+01.0   99    99.99   3204    3989   61102  17645     97.1    1.301  ! Near Maximum !
+02.0   99   100.98   3239    4078   63118  17818     97.4    1.280  !DANGEROUS LOAD-DO NOT USE!
+03.0  100   101.97   3275    4168   65206  17983     97.8    1.260  !DANGEROUS LOAD-DO NOT USE!
+04.0  101   102.96   3310    4259   67371  18142     98.1    1.240  !DANGEROUS LOAD-DO NOT USE!
+05.0  102   103.95   3346    4351   69616  18294     98.4    1.220  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba     98    99.00   3263    4137   65014  17598     98.8    1.265  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     98    99.00   3062    3643   53395  17102     93.5    1.387

Uncalibrated .7 factor:

Cartridge          : 7 mm Rem Ultra Mag
Bullet             : .284, 175, Swift A-Frame SS
Useable Case Capaci: 103.359 grain H2O = 6.711 cm³
Cartridge O.A.L. L6: 3.550 inch = 90.17 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : Hodgdon US 869 ?

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   88    89.10   2752    2943   49587  13754     96.6    1.560
-09.0   89    90.09   2783    3010   51253  13900     97.0    1.537
-08.0   90    91.08   2814    3078   52976  14040     97.5    1.512
-07.0   91    92.07   2845    3146   54758  14174     97.8    1.488  ! Near Maximum !
-06.0   92    93.06   2876    3215   56602  14302     98.2    1.465  ! Near Maximum !
-05.0   93    94.05   2907    3285   58510  14423     98.5    1.442  ! Near Maximum !
-04.0   94    95.04   2938    3355   60484  14538     98.8    1.419  ! Near Maximum !
-03.0   95    96.03   2969    3426   62527  14646     99.1    1.397  ! Near Maximum !
-02.0   96    97.02   3000    3497   64643  14746     99.3    1.376  !DANGEROUS LOAD-DO NOT USE!
-01.0   97    98.01   3031    3569   66833  14840     99.5    1.354  !DANGEROUS LOAD-DO NOT USE!
+00.0   98    99.00   3061    3642   69101  14925     99.6    1.333  !DANGEROUS LOAD-DO NOT USE!
+01.0   99    99.99   3092    3715   71451  15003     99.8    1.312  !DANGEROUS LOAD-DO NOT USE!
+02.0   99   100.98   3122    3788   73886  15073     99.9    1.292  !DANGEROUS LOAD-DO NOT USE!
+03.0  100   101.97   3153    3862   76409  15136    100.0    1.272  !DANGEROUS LOAD-DO NOT USE!
+04.0  101   102.96   3183    3937   79025  15189    100.0    1.253  !DANGEROUS LOAD-DO NOT USE!
+05.0  102   103.95   3213    4011   81737  15235    100.0    1.233  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba     98    99.00   3133    3815   75527  14708    100.0    1.279  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     98    99.00   2976    3441   62707  14939     98.1    1.395  ! Near Maximum !

and 300 RUM:

Calibrated to .33:

Cartridge          : .300 Rem Ultra Mag
Bullet             : .308, 200, Nosler AccuBond 54618
Useable Case Capaci: 97.894 grain H2O = 6.356 cm³
Cartridge O.A.L. L6: 3.550 inch = 90.17 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   90    81.90   2921    3789   46270  12817    100.0    1.427
-09.0   91    82.81   2951    3867   47860  12898    100.0    1.405
-08.0   92    83.72   2981    3946   49508  12980    100.0    1.383
-07.0   93    84.63   3010    4024   51213  13060    100.0    1.361
-06.0   94    85.54   3040    4103   52982  13139    100.0    1.340
-05.0   95    86.45   3069    4183   54805  13217    100.0    1.320
-04.0   96    87.36   3098    4263   56682  13295    100.0    1.300  ! Near Maximum !
-03.0   97    88.27   3127    4344   58617  13371    100.0    1.280  ! Near Maximum !
-02.0   98    89.18   3156    4425   60616  13446    100.0    1.260  ! Near Maximum !
-01.0   99    90.09   3185    4506   62681  13521    100.0    1.242  ! Near Maximum !
+00.0  100    91.00   3214    4588   64814  13594    100.0    1.223  !DANGEROUS LOAD-DO NOT USE!
+01.0  101    91.91   3243    4671   67019  13666    100.0    1.205  !DANGEROUS LOAD-DO NOT USE!
+02.0  102    92.82   3272    4754   69297  13737    100.0    1.187  !DANGEROUS LOAD-DO NOT USE!
+03.0  103    93.73   3301    4838   71653  13807    100.0    1.169  !DANGEROUS LOAD-DO NOT USE!
+04.0  104    94.64   3329    4922   74089  13876    100.0    1.152  !DANGEROUS LOAD-DO NOT USE!
+05.0  105    95.55   3358    5007   76609  13944    100.0    1.135  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba    100    91.00   3270    4749   72095  13362    100.0    1.173  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    100    91.00   3145    4394   57536  13874    100.0    1.281  ! Near Maximum !

Not calibrated (.7 factor):

Cartridge          : .300 Rem Ultra Mag
Bullet             : .308, 200, Nosler AccuBond 54618
Useable Case Capaci: 97.894 grain H2O = 6.356 cm³
Cartridge O.A.L. L6: 3.550 inch = 90.17 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   90    81.90   2821    3534   53318  11035    100.0    1.434
-09.0   91    82.81   2847    3599   55197  11094    100.0    1.413
-08.0   92    83.72   2872    3664   57136  11152    100.0    1.391  ! Near Maximum !
-07.0   93    84.63   2898    3730   59137  11209    100.0    1.370  ! Near Maximum !
-06.0   94    85.54   2923    3795   61203  11265    100.0    1.350  ! Near Maximum !
-05.0   95    86.45   2949    3861   63337  11320    100.0    1.330  ! Near Maximum !
-04.0   96    87.36   2974    3927   65539  11375    100.0    1.311  !DANGEROUS LOAD-DO NOT USE!
-03.0   97    88.27   2999    3993   67813  11428    100.0    1.292  !DANGEROUS LOAD-DO NOT USE!
-02.0   98    89.18   3024    4060   70162  11480    100.0    1.273  !DANGEROUS LOAD-DO NOT USE!
-01.0   99    90.09   3048    4127   72589  11532    100.0    1.254  !DANGEROUS LOAD-DO NOT USE!
+00.0  100    91.00   3073    4194   75095  11582    100.0    1.237  !DANGEROUS LOAD-DO NOT USE!
+01.0  101    91.91   3098    4262   77685  11632    100.0    1.219  !DANGEROUS LOAD-DO NOT USE!
+02.0  102    92.82   3122    4330   80362  11680    100.0    1.202  !DANGEROUS LOAD-DO NOT USE!
+03.0  103    93.73   3147    4398   83128  11728    100.0    1.185  !DANGEROUS LOAD-DO NOT USE!
+04.0  104    94.64   3171    4466   85989  11774    100.0    1.168  !DANGEROUS LOAD-DO NOT USE!
+05.0  105    95.55   3196    4535   88947  11820    100.0    1.152  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba    100    91.00   3116    4311   82785  11414    100.0    1.191  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    100    91.00   3021    4054   67315  11785    100.0    1.290  !DANGEROUS LOAD-DO NOT USE!

 

[Ridgerunner665]

I'm betting that is a glitch in QL...using the .7 weighting factor for RUM's, I mean....look at the 300 Pegasus for example, a good bit more overbore than the 300 RUM and its weighting factor is .5


Another thing to consider with the RUM's and Weatherby rounds is the long freebore...add this to the OAL for more accurate projections.

I'm still thinking on that 300 BLK thing...

 

[Wyo7200]

. After I did those two, I double check the WF every time. I think 25/06 is off too, but that's just my taste.

I couldn't imagine seating another .075 to the coal Nosler lists. But I'll run the QL later to see what it says .

 

[Wyo7200]

I use this list as a guide to calibrate QL's weighing factor.

http://bulletin.accurateshooter.com/2014/03/overbore-cartridges-a-working-definition/

QL lists 25/06 (third from the bottom on the "overbore" section of the above list) as .55, but I set it to .33 get more accurate estimates without having to adjust the BR to unreasonable levels.

 

[Harv6]

I'm glad this thread was started, as there isn't much " how to" to be had with QuickLoad. The instructions seemed to explain what all the bells and whistles do, but didn't explain how and why you should use those functions, or how to apply the info to what youre doing. I still don't understand some of it, and Ive played with it a few hours a week for over a year now. I agree with everything I've seen brought up here. Except this:

Illustration showing "overflow capacity"...notice how the water is over the the top of the case mouth (photo courtesy of muzz).
[/url

When I started measuring H20 capacity, I did it as shown above, but the problem I ran into is the capacity wasn't repeatable. I'd measure the same case two or 3 times and the amount of meniscus (convex portion of water above the mouth) was never the same. I brought this up over on the Lee-Loader forum, and was told that you get more repeatable results when the water is perfectly flat, not convex or concave. I'll over fill it til it looks like the picture above and then take a paper towel and soak up some of the water. When its perfect it almost looks like it has no water in it at all.

 

[Wyo7200]

I've always leveled the water as well.

6mmbr has a very informative article regarding getting the best out of QuickLoad- http://www.6mmbr.com/quickload.html.

 

[Wyo7200]

I'm a bit weary of changing the Progressive burn limit but .4 and .8300 for burn rate is spot on. This combination is consistent across each of my chronographed loads- 125gr Sierra, 125gr Btips, 150gr Btips, 110gr V-Max in FC (24.1) and Fiocchi (23.7) brass.

I'll have to load some more up and confirm, but 15 out of 17 chronographed loads work with that combo without having to adjust the BR for each load. Published Hodgdon data is still too much for my components though.

 

[muleman]

Anybody know why Superformance and Levereolution powders aren't in Q/L 3.8?

 

[DrMike]

I'm only guessing, but my supposition is that Hogdon and/or Hornady have chosen not to make these available for testing because of assumed liability and/or patend issues. The newer IMR powders (4451, 4166 & 7977) will likely be included in an update this year just as were the newer Alliant powders (RL23 and RL26).

 

[Mikey338]

So I've gone through my Reloder 17 data for my wildcat and found quick load was about 100 fps optimistic. Made the change to the Ba to 0.5100 from 0.5375 which matches the velocities pretty much of 5 different charge weights, so now are the pressure predictions more accurate? I'm more concerned for pressure than velocity as I'm using a weaker action. I would also presume every time you bought more powder you have to prove it again

 

[Ridgerunner665]

More accurate? Yes....

Perfectly accurate? No... still gotta be careful.

Every lot of powder will be a little different.

 

[Wyo7200]

Wanted to share an update to the .300 blkout venture...

Some time ago back in 2012 I googled "polygonal rifling increase velocity" but didn't get anything back that had substance. I did it again today and and came across more info about increased velocity. I dug into QL to see if there is a setting to change for resistance caused by the rifling and found that I can do it by creating a new cartridge and selecting HK Polygon rifling. (Or I can adjust the cross sectional bore area) I still need to get the measurements QL is asking for, but I believe this will squash the estimates above and finally give me some peace...

 

[RiverRider]

About that weighting factor...the program info pop-ups tell you this:

cylindrical .75
typical .5
overbore .33

Yet, when I pull up the 7mm STW the default value for the weighting factor is 0.6! I don't think anyone would argue that the 7 STW is NOT overbore, and here's the program dumping in a ridiculous value. I think it should be 0.4 or maybe even 0.33 maybe.

There could be some point that I'm missing, and I have days where I tend to be a little less perceptive than others. But this is something that has always made me scratch my head.

I have messed with the weighting factor value and it does seem to make some difference...at least in terms of pressure, and that's pretty important to me.

I can edit my cartridge files permanently so that a cartridge opens up with a more reasonable weighting factor, but I have to wonder WTH is up with all this. I'd like to understand why the default weighting factors do not match up to what the info pop-up seems to suggest.