QL Request

[erikc838]

6.5 Creedmoor
8 twist
22 inch barrel
Starline (LR) brass
210M primer
RL26 powder

Bullets to test, 142 ABLR and 129 ABLR, loading both to 2.830" COAL. Thanks

 

[DrMike]

Cartridge          : 6.5 Creedmoor Hornady
Bullet             : .264, 129, Nosler AccuBond LR 58943 G7
Useable Case Capaci: 47.564 grain H2O = 3.088 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-26

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   98    45.99   2680    2057   41839  11781     97.2    1.289
-09.0   99    46.50   2715    2112   43474  11905     97.7    1.266
-08.0  100    47.01   2751    2167   45183  12021     98.1    1.243
-07.0  101    47.52   2786    2224   46970  12128     98.5    1.220
-06.0  102    48.03   2822    2281   48842  12226     98.9    1.198
-05.0  103    48.55   2858    2339   50802  12314     99.2    1.176
-04.0  104    49.06   2893    2398   52855  12394     99.4    1.155
-03.0  105    49.57   2929    2457   55009  12463     99.7    1.134  ! Near Maximum !
-02.0  106    50.08   2964    2517   57267  12522     99.8    1.113  ! Near Maximum !
-01.0  107    50.59   3000    2578   59637  12571     99.9    1.093  ! Near Maximum !
+00.0  108    51.10   3035    2639   62125  12609    100.0    1.072  ! Near Maximum !
+01.0  110    51.61   3070    2700   64742  12637    100.0    1.053  !DANGEROUS LOAD-DO NOT USE!
+02.0  111    52.12   3106    2762   67494  12660    100.0    1.034  !DANGEROUS LOAD-DO NOT USE!
+03.0  112    52.63   3141    2825   70392  12682    100.0    1.015  !DANGEROUS LOAD-DO NOT USE!
+04.0  113    53.14   3175    2888   73442  12702    100.0    0.996  !DANGEROUS LOAD-DO NOT USE!
+05.0  114    53.66   3210    2952   76660  12720    100.0    0.977  !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    51.10   3189    2913   79299  11962    100.0    0.977  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    108    51.10   2800    2246   48428  12660     95.3    1.198

Cartridge          : 6.5 Creedmoor Hornady
Bullet             : .264, 142, Nosler AccuBond LR 58922 G7
Useable Case Capaci: 46.178 grain H2O = 2.998 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-26

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   96    43.92   2562    2069   41827  11447     98.2    1.346
-09.0   97    44.41   2594    2122   43431  11554     98.6    1.322
-08.0   98    44.90   2627    2176   45104  11653     98.9    1.298
-07.0   99    45.38   2660    2231   46853  11744     99.2    1.275
-06.0  100    45.87   2693    2286   48682  11827     99.5    1.253
-05.0  101    46.36   2725    2342   50593  11900     99.7    1.230
-04.0  102    46.85   2758    2398   52592  11965     99.8    1.209
-03.0  103    47.34   2790    2455   54687  12020     99.9    1.187  ! Near Maximum !
-02.0  105    47.82   2823    2512   56879  12065    100.0    1.166  ! Near Maximum !
-01.0  106    48.31   2855    2570   59174  12102    100.0    1.145  ! Near Maximum !
+00.0  107    48.80   2887    2628   61585  12134    100.0    1.125  ! Near Maximum !
+01.0  108    49.29   2919    2687   64112  12164    100.0    1.105  !DANGEROUS LOAD-DO NOT USE!
+02.0  109    49.78   2951    2746   66767  12193    100.0    1.086  !DANGEROUS LOAD-DO NOT USE!
+03.0  110    50.26   2983    2806   69552  12220    100.0    1.066  !DANGEROUS LOAD-DO NOT USE!
+04.0  111    50.75   3015    2866   72484  12246    100.0    1.047  !DANGEROUS LOAD-DO NOT USE!
+05.0  112    51.24   3047    2926   75567  12270    100.0    1.029  !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    107    48.80   3024    2883   78586  11531    100.0    1.027  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    107    48.80   2675    2256   47912  12368     96.5    1.255

 

[erikc838]

Thank you for the fast response

 

[SJB358]

That 142 is screaming!

Need to find a few of them!

 

[erikc838]

Having never used QL before, and assuming many of you have, where is the best place to start (since there is really no published data for this powder, with the exception of the Berger 135gr)? Is it like regular data where you begin by reducing 10% and work up from there? In general, do the people who have used the program find it to be very accurate? I would also imagine that there are instances where people exceed the loads listed as Dangerous, and other times, pressure occurs much sooner.

 

[SJB358]

I usually start around the projected 53-55k Mark to get a baseline and increase till I’m near my targeted speed.

 

[DrMike]

I usually start around the projected 53-55k Mark to get a baseline and increase till I’m near my targeted speed.

Sound advice, that. I focus on percentage, but it works out to about the same thing. Fifty-three to fifty-five psi gives you some room to grow with most cartridges.

 

[erikc838]

I usually start around the projected 53-55k Mark to get a baseline and increase till I’m near my targeted speed.

That's where I started so I'll see how it goes. I decided to give up on that powder with the 129gr bullet, as I can't get enough powder in the case to make it worthwhile.

 

[SJB358]

17 works incredible with the 127-130 Bullets in the 6.5. 26 is my go to for the 140-147’s.

 

[erikc838]

43.0 grains of RL17 gave me 2912 ft/s and 3/4" (3 shot) at 100 yards with the 129
48.0 grain of RL26 produced 2810 ft/s and 5/8" (3 shot) at 100 yards with the 142

No signs of pressure.

Great for a light rifle that has a barrel profile the size of my pinky finger.

 

[SJB358]

Same here. Just about the same numbers here.

 

[jason miller]

I usually start around the projected 53-55k Mark to get a baseline and increase till I’m near my targeted speed.

What he said. When I have a Quickload simulation to use, I load up a set of 5 at a time in increasing charges and stop when my chronograph says I'm at whatever Quickload thinks is 62-63K psi or so. Then I shoot for groups and see if the rifle likes it at max. Seating depth and/or backing off are my next steps.

 

[erikc838]

48.7 grains produced 2909 ft/s. The primer was flattening but still had a rounded edge to it. There was no cratering and the bolt lift was normal. 3 shot group came in at 5/8" but just about every other group on the way there did too.

I'm guessing this is probably a good place to stop.