Quickload help

[Krakkon]

I just got Quickload and it seems that when applying proper burn rate in quickload to match my chrony it shows way over max in the danger zone but I have no pressure signs on the case..
And per hornady book I am under max!

I have checked case capacity with h20 and it seems all my rifles and loads that Quickload shows are about 150 to 200 fps slower that my chrony.. Loads were tested by a Prochrony I no longer have but also with a new magnetospeed v3..

Am I missing some variable in quickload that is making all my ammo show a slow velocity?

 

[kcebcj]

I fool with Quick Load a lot. I'm not a expert by no means. I'm confused by this part of your question: "when applying proper burn rate to match my chrony" What do you mean by that? Are you talking about the grains of powder you enter to get the velocities in Quick Load that the chronograph is showing?

 

[Krakkon]

Sorry I was not real clear on that part... What I meant was when I click on the hand and pencil by the powder selection it opens the gray area to adjust the burn rate factor.. I upped that number to raise velocity a bit and then lowered my weighing factor to match my true chrony speed..
Maybe this is the wrong way to go about it? I have been trying to read and find as much info on quickload as I can and that is what I have seen a few other guys do..

Thanks for the replies

 

[Krakkon]

This is what quickload is showing me but I am getting 3185 FPS with 43.5 Grains




Cartridge : .243 Win.
Bullet : .243, 87, Hornady V-MAX 22440
Useable Case Capaci: 50.600 grain H2O = 3.285 cm³
Cartridge O.A.L. L6: 2.645 inch = 67.18 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H4350

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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

-20.0 76 34.80 2442 1152 28845 8820 85.9 1.442
-18.0 78 35.67 2501 1208 30682 9117 87.3 1.407
-16.0 80 36.54 2559 1265 32633 9409 88.6 1.373
-14.0 82 37.41 2618 1324 34697 9694 89.8 1.339
-12.0 84 38.28 2676 1384 36861 9972 91.0 1.305
-10.0 86 39.15 2735 1445 39139 10243 92.1 1.269
-08.0 88 40.02 2793 1508 41551 10504 93.2 1.233
-06.0 90 40.89 2852 1571 44107 10755 94.1 1.199
-04.0 92 41.76 2910 1637 46815 10995 95.1 1.166
-02.0 93 42.63 2969 1703 49685 11223 95.9 1.134
+00.0 95 43.50 3027 1770 52726 11439 96.7 1.104 ! Near Maximum !
+02.0 97 44.37 3085 1839 55952 11641 97.4 1.074 ! Near Maximum !
+04.0 99 45.24 3143 1908 59374 11829 98.0 1.046 ! Near Maximum !
+06.0 101 46.11 3200 1979 62997 12001 98.5 1.018 !DANGEROUS LOAD-DO NOT USE!
+08.0 103 46.98 3258 2050 66862 12157 99.0 0.991 !DANGEROUS LOAD-DO NOT USE!
+10.0 105 47.85 3315 2123 70960 12296 99.3 0.965 !DANGEROUS LOAD-DO NOT USE!

 

[jrsolocam]

It's art and science. It's difficult comparing QL, book data and actual results. I've had loads predicted too fast, too slow and just right. QL models interior ballistics and book data is empirical data from a specific chambers and barrels. Individual components are too variable to make QL extremely accurate. But it is fun and interesting...

Now I've learned to start out with moderate loads and let my rifle and magnetospeed guide the way.

 

[Krakkon]

Thanks for the reply jrsolocam.. I was hoping I could make quickload match my chrony speed really close so that I could use barrel time to go strait to a really accurate load... Am I asking to much from the program?.. Is tweaking burn rate and weighing factor a safe or feasible way to match my chrony speed?

 

[Krakkon]

Ok, so I tweaked burn rate form default 0.5130 to 0.5450 and weighing factor from default of 0.6 to 0.4 to get the speeds to match my chrony... Is this the wrong way to go about it?


Cartridge : .243 Win.
Bullet : .243, 87, Hornady V-MAX 22440
Useable Case Capaci: 50.600 grain H2O = 3.285 cm³
Cartridge O.A.L. L6: 2.645 inch = 67.18 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H4350 ?

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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

-20.0 76 34.80 2571 1277 30249 9633 88.1 1.359
-18.0 78 35.67 2632 1339 32147 9952 89.4 1.335
-16.0 80 36.54 2694 1402 34134 10265 90.5 1.302
-14.0 82 37.41 2755 1467 36220 10572 91.6 1.269
-12.0 84 38.28 2817 1533 38426 10870 92.7 1.235
-10.0 86 39.15 2878 1601 40758 11160 93.7 1.199
-08.0 88 40.02 2940 1670 43225 11440 94.6 1.166
-06.0 90 40.89 3002 1741 45835 11710 95.5 1.134
-04.0 92 41.76 3063 1812 48596 11968 96.2 1.102
-02.0 93 42.63 3124 1886 51517 12213 96.9 1.072 ! Near Maximum !
+00.0 95 43.50 3185 1960 54611 12444 97.6 1.043 ! Near Maximum !
+02.0 97 44.37 3246 2036 57887 12662 98.2 1.015 ! Near Maximum !
+04.0 99 45.24 3307 2113 61358 12864 98.7 0.988 !DANGEROUS LOAD-DO NOT USE!
+06.0 101 46.11 3368 2191 65037 13050 99.1 0.962 !DANGEROUS LOAD-DO NOT USE!
+08.0 103 46.98 3428 2270 68941 13219 99.4 0.937 !DANGEROUS LOAD-DO NOT USE!
+10.0 105 47.85 3488 2350 73085 13371 99.7 0.913 !DANGEROUS LOAD-DO NOT USE!

 

[jrsolocam]

Thanks for the reply jrsolocam.. I was hoping I could make quickload match my chrony speed really close so that I could use barrel time to go strait to a really accurate load... Am I asking to much from the program?.. Is tweaking burn rate and weighing factor a safe or feasible way to match my chrony speed?

Yes and no. QL won't point you to an accurate load. A couple years ago I fooled around with the weigh factor but not the burn rate. I kind of ended up chasing my tail. Good luck.

 

[Krakkon]

I will mess with it and see what I can come up with.. Thanks for the replies