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diginit
08-11-2009, 4:28 PM
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
08-11-2009, 8:35 PM
I use 27.0 gr of 748 in both my bolt gun & ARs with 55 gr V-Max bullets , WSR primers.

Fjold
08-11-2009, 8:41 PM
The Hornady manual says 23 - 27.7 grains of Win 748 with a 55 grain bullet.

ar15barrels
08-11-2009, 11:24 PM
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
08-12-2009, 6:34 PM
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
08-12-2009, 11:26 PM
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. :43:

diginit
08-13-2009, 2:28 PM
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
08-18-2009, 5:04 PM
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
08-18-2009, 5:24 PM
no pics? didnt happen...!

anyracoon
08-18-2009, 6:14 PM
Was that with 748 or ?

Bongos
08-18-2009, 6:25 PM
keep in mind guys, if you shoot at Angeles, the elevation is 1404ft, this will increase your velocity by at least 100 fps!

diginit
09-24-2009, 11:02 PM
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.