Fotis - 223 H4895 QL

[frankm]

Fotis, you were kind enough to help me with a AA1680 QL for a 50 gr bullet in a 223. I found 17.1 grs shot 3/4" at 100 with 2800 muzzle velocity. Only problem was sooty cases!

Going to experiment going up another grain or so but wondering if you d be kind enough to do a QL with H4895 and 50 gr bullet in 223. My rifle has 24" barrel and 17.5 grs of H4895 gave 2400 ish. Would like to see what QL would predict for 2700-2800 with the H4895.

Really appreciate your help, it s been very much appreciated !Frankm

 

[FOTIS]

Cartridge          : .223 Rem. (SAAMI)
Bullet             : .224, 50, Nosler BalTip 39522
Useable Case Capaci: 25.924 grain H2O = 1.683 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Hodgdon H4895

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   67    16.00   2085     482   14693   3612     64.8    1.615
-18.0   69    16.40   2133     505   15454   3759     66.1    1.583
-16.0   70    16.80   2183     529   16259   3908     67.5    1.551
-14.0   72    17.20   2232     553   17108   4057     68.8    1.521
-12.0   74    17.60   2282     578   18004   4208     70.1    1.490
-10.0   75    18.00   2333     604   18949   4360     71.4    1.461
-08.0   77    18.40   2384     631   19948   4512     72.7    1.432
-06.0   79    18.80   2435     659   21001   4664     74.0    1.404
-04.0   80    19.20   2487     687   22115   4817     75.3    1.376
-02.0   82    19.60   2539     716   23291   4969     76.6    1.348
+00.0   84    20.00   2592     746   24534   5120     77.9    1.322
+02.0   85    20.40   2644     776   25846   5270     79.1    1.295
+04.0   87    20.80   2697     808   27234   5420     80.3    1.270
+06.0   89    21.20   2750     840   28702   5567     81.5    1.244
+08.0   90    21.60   2804     873   30255   5713     82.7    1.219
+10.0   92    22.00   2857     907   31897   5857     83.8    1.195

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     84    20.00   2782     859   29424   5595     86.5    1.234
Data for burning rate decreased by 10% relative to nominal value:
-Ba     84    20.00   2381     629   20309   4499     67.6    1.424

 

[frankm]

Thanks much for the prompt reply Fotis. Guess where I ll be this evening after work? At the bench trying 20.5 to around 22 grs and getting set to Chrono. After that velocity work I ll play around for a node. Maybe the H4895 will be cleaner than the AA1680.


Thanks for the QL help!