I need (Quickload) Help..

Deadeye260

New member
Can someone with quick load run some numbers for me please?
6.5 Creedmoor
90gr Speer TNT
Imr8208XBR (40gr) to max would be ideal!
20in 1/8 twist button rifled barrel
CCI200s
 
I'd like to see what the predictions are where I'm at with this load up to max if this isn't maxed out.. This load is a complete laser 1 hole load in my AR10. No pressure signs to speak of. OAL is 2.640
 
Cartridge : 6.5 Creedmoor Hornady
Bullet : .264, 90, Speer HP TNT 1445
Useable Case Capaci: 52.811 grain H2O = 3.429 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 20.0 inch = 508.0 mm
Powder : IMR 8208 XBR

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 74 36.00 2654 1407 33665 9775 92.4 1.176
-09.0 75 36.40 2681 1436 34586 9903 92.9 1.164
-08.0 76 36.80 2708 1466 35530 10029 93.4 1.152
-07.0 76 37.20 2735 1495 36498 10153 93.8 1.140
-06.0 77 37.60 2762 1525 37489 10276 94.3 1.126
-05.0 78 38.00 2790 1555 38504 10396 94.7 1.112
-04.0 79 38.40 2817 1585 39545 10515 95.1 1.097
-03.0 80 38.80 2844 1616 40611 10631 95.5 1.083
-02.0 81 39.20 2871 1647 41703 10745 95.9 1.070
-01.0 81 39.60 2898 1678 42822 10857 96.2 1.057
+00.0 82 40.00 2924 1709 43969 10966 96.6 1.043
+01.0 83 40.40 2951 1741 45144 11073 96.9 1.030
+02.0 84 40.80 2978 1772 46347 11177 97.2 1.017
+03.0 85 41.20 3005 1804 47581 11278 97.5 1.005
+04.0 85 41.60 3031 1836 48844 11377 97.8 0.992
+05.0 86 42.00 3058 1869 50139 11473 98.1 0.980

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 82 40.00 3064 1876 51241 11030 99.7 0.970
Data for burning rate decreased by 10% relative to nominal value:
-Ba 82 40.00 2747 1508 36831 10438 90.0 1.136
 
Originally Posted By: Deadeye260I'd like to see what the predictions are where I'm at with this load up to max if this isn't maxed out.. This load is a complete laser 1 hole load in my AR10. No pressure signs to speak of. OAL is 2.640

Using your OAL of 2.640 and assuming you aren't touching the lands, QL shows 44.2gr IMR8208 XBR as being max w/90gr Speer TNT and that should be right around 3270 FPS from your 20in. barrel.

If you're looking for all out speed, RL17 seems to be the winner by about 150 FPS but if you've got a load with IMR8208 that's putting them into one big ragged hole, who cares about another 150fps.
 
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