Quickload 308?

Wincheringen · Jan 27, 2014

If one of you kind fellows doesn't mind running Quickload on my 308 load I'd be pretty thankful. I'm mainly interested in pressure as this is for a short barreled rifle.

I'm running 140 grain Custom Competitions with 45.0 grains of AA4064, CCI 34 primers, in LC 13 brass at 2.62". Accuracy is good but I haven't run them over the chronograph yet. It is a compressed load so I doubt I'll go much higher but it would be nice to get a ballpark. Win brass holds about 2.5 grains more powder to be at the same level in the case, and RP is about 2.8 more.

Thanks!

DrMike · Jan 27, 2014

Cartridge : .308 Win. (SAAMI)
Bullet : .308, 140, Nosler CC HPBT 53152
Useable Case Capaci: 49.025 grain H2O = 3.183 cm³
Cartridge O.A.L. L6: 2.620 inch = 66.55 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Accurate 4064

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 81 36.00 2193 1494 23743 6424 89.5 1.504
-18.0 83 36.90 2249 1572 25306 6629 90.8 1.468
-16.0 86 37.80 2305 1652 26980 6828 92.0 1.432
-14.0 88 38.70 2362 1734 28772 7020 93.1 1.397
-12.0 90 39.60 2418 1818 30690 7204 94.2 1.363
-10.0 92 40.50 2475 1904 32741 7378 95.2 1.330
-08.0 94 41.40 2531 1992 34937 7543 96.1 1.298
-06.0 96 42.30 2588 2082 37285 7697 96.9 1.264
-04.0 98 43.20 2644 2173 39799 7840 97.6 1.226
-02.0 100 44.10 2700 2266 42492 7971 98.2 1.189
+00.0 102 45.00 2756 2361 45376 8089 98.8 1.154
+02.0 104 45.90 2812 2457 48468 8194 99.2 1.119
+04.0 106 46.80 2867 2555 51786 8285 99.5 1.087
+06.0 108 47.70 2922 2654 55350 8361 99.8 1.055 ! Near Maximum !
+08.0 110 48.60 2977 2754 59182 8421 99.9 1.024 ! Near Maximum !
+10.0 112 49.50 3031 2856 63307 8466 100.0 0.994 !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 45.00 2899 2613 56263 7783 100.0 1.053 ! Near Maximum !
Data for burning rate decreased by 10% relative to nominal value:
-Ba 102 45.00 2555 2030 35104 7908 92.5 1.285

Wincheringen · Jan 28, 2014

Thanks, from what I've loaded so far I think this lot is a tad faster. It seems to be working really well in a variety of loads. Once I get a chance to run this over the chronograph I will know a bit more.

steve4102 · Jan 28, 2014

Here it is in an easier to read format.

Code:

 Cartridge          : .308 Win. (SAAMI)
Bullet             : .308, 140, Nosler CC HPBT 53152
Cartridge O.A.L. L6: 2.620 inch or 66.55 mm
Barrel Length      : 22.0 inch or 558.8 mm
Powder             : Accurate 4064

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   81    36.00   2192    1494   23733   6424     89.4    1.513
-18.0   83    36.90   2249    1572   25295   6630     90.7    1.475
-16.0   85    37.80   2305    1652   26968   6829     92.0    1.438
-14.0   88    38.70   2362    1734   28759   7020     93.1    1.401
-12.0   90    39.60   2418    1818   30675   7204     94.2    1.366
-10.0   92    40.50   2475    1904   32725   7379     95.2    1.332
-08.0   94    41.40   2531    1991   34919   7544     96.1    1.298
-06.0   96    42.30   2587    2081   37266   7698     96.9    1.265
-04.0   98    43.20   2644    2173   39778   7841     97.6    1.226
-02.0  100    44.10   2700    2266   42467   7972     98.2    1.189
+00.0  102    45.00   2756    2360   45349   8090     98.8    1.154
+02.0  104    45.90   2811    2457   48438   8195     99.2    1.120
+04.0  106    46.80   2867    2554   51753   8286     99.5    1.087
+06.0  108    47.70   2922    2653   55313   8362     99.8    1.055  ! Near Maximum !
+08.0  110    48.60   2976    2754   59140   8423     99.9    1.024  ! Near Maximum !
+10.0  112    49.50   3031    2855   63261   8468    100.0    0.994  !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    45.00   2899    2612   56228   7784    100.0    1.054  ! Near Maximum !
Data for burning rate decreased by 10% relative to nominal value:
-Ba    102    45.00   2555    2029   35084   7909     92.5    1.284