Quick load 6.5 creedmoor

[Michael C. Smith]

Could someone please run quick load for me.
6.5 creedmoor
Nosler brass 52.2 capacity once fired
H4350
130 AccuBond
22 inch barrel

Thank you. Trying to work up a load for the new savage 16.

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[DrMike]

Cartridge          : 6.5 Creedmoor Hornady
Bullet             : .264, 130, Nosler AccuBond 56902
Useable Case Capaci: 46.279 grain H2O = 3.005 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 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   84    34.96   2267    1483   32589   8285     89.1    1.465
-18.0   86    35.83   2322    1556   34749   8549     90.3    1.425
-16.0   88    36.71   2377    1631   37047   8806     91.4    1.387
-14.0   90    37.58   2432    1707   39504   9056     92.5    1.346
-12.0   92    38.46   2487    1786   42122   9298     93.5    1.306
-10.0   94    39.33   2542    1866   44894   9530     94.4    1.267
-08.0   96    40.20   2598    1948   47830   9753     95.3    1.231
-06.0   98    41.08   2653    2032   50958   9964     96.1    1.195
-04.0  101    41.95   2708    2117   54296  10164     96.9    1.161  ! Near Maximum !
-02.0  103    42.83   2763    2204   57860  10351     97.5    1.128  ! Near Maximum !
+00.0  105    43.70   2818    2293   61668  10525     98.1    1.096  ! Near Maximum !
+02.0  107    44.57   2873    2383   65741  10684     98.6    1.065  !DANGEROUS LOAD-DO NOT USE!
+04.0  109    45.45   2928    2475   70101  10828     99.0    1.035  !DANGEROUS LOAD-DO NOT USE!
+06.0  111    46.32   2983    2568   74775  10956     99.4    1.007  !DANGEROUS LOAD-DO NOT USE!
+08.0  113    47.20   3037    2662   79791  11067     99.7    0.979  !DANGEROUS LOAD-DO NOT USE!
+10.0  115    48.07   3091    2758   85182  11161     99.9    0.952  !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    105    43.70   2939    2494   72678  10344    100.0    1.022  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    105    43.70   2656    2036   50877  10217     92.4    1.192

 

[Michael C. Smith]

Thank you Dr Mike. Could you help me understand what I am looking for on the numbers to see where my node would likely be?

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[TackDriver284]

Your node should be around 42.8 to 42.9 grains. Best to work up in .3 increments, I would start from 41.5 grains up to 43.5 grains. Here is the chart of the nodes. You won't be able to get to the next fast node, 1.0126, because of pressure, but you can find a slower node at 1.2018 at 40 to 41 grains but velocity will be slower.

http://imgur.com/kZN3iuT

 

[Michael C. Smith]

How do you know that these are the optimum barrel time numbers? That 1.0126 is my next fast node. I guess I am wondering how we decided what the optimum barrel time is?

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[TackDriver284]

How do you know that these are the optimum barrel time numbers? That 1.0126 is my next fast node. I guess I am wondering how we decided what the optimum barrel time is?

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If you look at the chart on the last vertical row on QL, those are the OBT, and if you check the charges in relation to the OBT numbers, it will tell you what charge weight to use to get to that OBT in regard to barrel length.

If you decide to go to the next fast node, you will see pressure. I would not go there. I would stick with 1.1270 OBT and try charge weights I explained above. I used to own a 6.5 Creed and sold it, planning to get a new one built. I used this OBT and shot .2 MOA

You can try the ladder test to check pressure and see for yourself.

 

[Michael C. Smith]

How do you know that these are the optimum barrel time numbers? That 1.0126 is my next fast node. I guess I am wondering how we decided what the optimum barrel time is?

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If you look at the chart on the last vertical row on QL, those are the OBT, and if you check the charges in relation to the OBT numbers, it will tell you what charge weight to use to get to that OBT in regard to barrel length.

If you decide to go to the next fast node, you will see pressure. I would not go there. I would stick with 1.1270 OBT and try charge weights I explained above. I used to own a 6.5 Creed and sold it, planning to get a new one built. I used this OBT and shot .2 MOA

You can try the ladder test to check pressure and see for yourself.

Thank you for the explanation. I have charges loaded now from 41 to 42.5 in
.5 grain increments. I will work up .3 from there to maybe 43.2 or so. I hope to shoot tomorrow if the wind dies down.

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