IMR 4198 and 50gr Vmax? .223

[Skin1991]

I managed to get some IMR 4198 and I want to load some .223 50 grain Vmax rounds. Have any of you experienced reloadeds tries this combo in an Ar? I am gettin mixed feelings based in my google search, if you guys have done this combo can I ask your load data? Any info is appreciated, thanks guys!

[Swagman00]

I managed to get some IMR 4198 and I want to load some .223 50 grain Vmax rounds. Have any of you experienced reloadeds tries this combo in an Ar? I am gettin mixed feelings based in my google search, if you guys have done this combo can I ask your load data? Any info is appreciated, thanks guys!

IMR 4198 is on the fast side for .223, but shouldn't be an issue. Hodgdon has reload data on their site showing loads with that powder and 63 gr. Sierra pills. You have an extra buffer of safety if used for a 5.56 barrel to boot.

If this can work for a 60 grain V-max, it can certainly work for a 50:

Bullet weight: Man. Powder Bullet Dia. C.O.L. Min Grs. Vel. Pressure Max Grs. Velocity Pressure
60 GR. HDY V-MAX IMR IMR 4198 .224" 2.250" 18.3 2795 fps. 42,500 PSI 19.5 2945 52,000 PSI

[Brd_Hntr]

http://data.hodgdon.com/cartridge_load.asp

They show data for that combination on the web site.

I've used plenty of this powder in .223.

[Skin1991]

Thanks guys that's exactly what I was looking for. Ill load 5 of each to see which one cycles through the AR smoother.

[ar15barrels]

This is a quickload simulation...

Cartridge          : .223 Rem. (SAAMI)
Bullet             : .224, 50, Hornady V-MAX BT 22261
Cartridge O.A.L. L6: 2.250 inch or 57.15 mm
Barrel Length      : 16.0 inch or 406.4 mm
Powder             : IMR 4198

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.19% 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

-11.9   86    18.50   2667     790   35519   8580     93.8    0.891
-10.7   88    18.75   2700     809   36756   8708     94.4    0.879
-09.5   89    19.00   2733     829   38033   8832     94.9    0.866
-08.3   90    19.25   2765     849   39352   8953     95.4    0.853
-07.1   91    19.50   2798     869   40716   9071     95.9    0.839
-06.0   92    19.75   2831     890   42124   9186     96.4    0.826
-04.8   94    20.00   2863     910   43579   9296     96.8    0.813
-03.6   95    20.25   2895     931   45082   9403     97.2    0.801
-02.4   96    20.50   2928     952   46636   9506     97.6    0.788
-01.2   97    20.75   2960     973   48243   9605     98.0    0.776  ! Near Maximum !
+00.0   98    21.00   2992     994   49902   9699     98.3    0.765  ! Near Maximum !
+01.2   99    21.25   3024    1015   51618   9790     98.6    0.753  ! Near Maximum !
+02.4  101    21.50   3056    1037   53392   9875     98.8    0.742  ! Near Maximum !
+03.6  102    21.75   3088    1058   55229   9957     99.1    0.731  !DANGEROUS LOAD-DO NOT USE!
+04.8  103    22.00   3119    1080   57128  10033     99.3    0.720  !DANGEROUS LOAD-DO NOT USE!
+06.0  104    22.25   3151    1102   59090  10105     99.5    0.709  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 3% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 3% relative to nominal value:
+Ba     98    21.00   3035    1022   52431   9700     99.2    0.748  ! Near Maximum !
Data for burning rate decreased by 3% relative to nominal value:
-Ba     98    21.00   2946     963   47427   9657     97.0    0.782  ! Near Maximum !