Results are in-55g Vmax load data requested

[diginit]

Csn some one please give me the Hornady load data for 223 55g Vmax bullets using Win 748? I'm loading for an AR carbine 16" 1/9 twist and I have only found data for the 50g and 62g. I usually load 26.5g of 748 for 55g FMJ's. TIA

[anyracoon]

I use 27.0 gr of 748 in both my bolt gun & ARs with 55 gr V-Max bullets , WSR primers.

[Fjold]

The Hornady manual says 23 - 27.7 grains of Win 748 with a 55 grain bullet.

[ar15barrels]

This is NOT load data.
This is a Quickload simulation using the bullet and powder you asked about.

Cartridge          : .223 Rem. (SAAMI)
Bullet             : .224, 55, Hornady V-MAX FB 22271
Cartridge O.A.L. L6: 2.260 inch or 57.40 mm
Barrel Length      : 16.0 inch or 406.4 mm
Powder             : Winchester 748

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.926% 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

-09.3   89    24.50   2677     875   37664  10355     86.8    0.919
-08.3   90    24.75   2708     895   38846  10502     87.5    0.906
-07.4   91    25.00   2738     916   40072  10647     88.2    0.893
-06.5   92    25.25   2769     936   41339  10789     88.8    0.879
-05.6   93    25.50   2800     957   42650  10930     89.5    0.867
-04.6   94    25.75   2831     979   44005  11068     90.1    0.854
-03.7   94    26.00   2862    1000   45408  11203     90.7    0.842
-02.8   95    26.25   2892    1022   46860  11336     91.3    0.829  ! Near Maximum !
-01.9   96    26.50   2924    1044   48364  11465     91.9    0.817  ! Near Maximum !
-00.9   97    26.75   2955    1066   49920  11592     92.4    0.805  ! Near Maximum !
+00.0   98    27.00   2986    1089   51534  11715     93.0    0.794  ! Near Maximum !
+00.9   99    27.25   3017    1112   53205  11835     93.5    0.782  ! Near Maximum !
+01.9  100    27.50   3049    1135   54937  11951     94.0    0.771  !DANGEROUS LOAD-DO NOT USE!
+02.8  101    27.75   3080    1158   56734  12064     94.5    0.760  !DANGEROUS LOAD-DO NOT USE!
+03.7  102    28.00   3111    1182   58596  12172     95.0    0.749  !DANGEROUS LOAD-DO NOT USE!
+04.6  103    28.25   3143    1206   60527  12278     95.4    0.738  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba     98    27.00   3084    1162   56879  11950     96.2    0.760  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba     98    27.00   2877    1011   46553  11328     88.8    0.832

[diginit]

Thanks guys, The simulation data is priceless. looks lke I can get 2924 fps safely using the same load I use for FMJ's. I'll find out after working up afew. I'd like to get 2950 to 3000fps. We'll see what happens

[domokun]

Thanks guys, The simulation data is priceless. looks lke I can get 2924 fps safely using the same load I use for FMJ's. I'll find out after working up afew. I'd like to get 2950 to 3000fps. We'll see what happens

I'm excited to see what those VMAX bullets will do to watermelons at the next Pinata shoot.

[diginit]

Those 55g hollow points at 26.5/2230 sure did a number, Huh.
I'm looking forward to trying them too. Bring lots of melons!

[diginit]

Results

Loaded up some test rounds and shoot them Saturday. Started at 24g and went to 27.4. Got flat primers at 27.0. My best groups at 26.2.
Looks like that is the load for my 16" AR carbine. Bushmaster patrolman upper, Territorial Gunsmith lower, RRA PLK, with an A2 stock and an A2 Flash Supressor. Thanks Again!

[Darklyte27]

no pics? didnt happen...!

[anyracoon]

Was that with 748 or ?

[Bongos]

keep in mind guys, if you shoot at Angeles, the elevation is 1404ft, this will increase your velocity by at least 100 fps!

[diginit]

Was that with 748 or ?

Yet another post raised from the dead.
748 is correct. My carbine likes 26.5 with a 55gr FMJ At 2.230 and 26.2 with the Vmax 55gr at 2.250.