[armoredman]

55 grain FMJ-BT, over 22.5 grains H-335, chrono'd out of a 16.14 inch barrel at 2427FPS. Seems a bit slow for the caliber, doesn't it?

Edited to correct the powder number, sorry. :)

[aerod1]

H-225? I've never heard of it. :confused: Maybe H-335 or CFE-223.

[rcmodel]

No.
Assuming you are talking about H335, and not H225?

55 grain bullet and 22.5 grains is not even a starting load according to hodgdon.

They are getting 3,018 with the 23.0 grain Starting load out of a 24" pressure test barrel.
25.3 is MAX for 3,203.

And you got less powder and 8" less barrel.

rc

[steve4102]

Not extremely slow, if we are talking about h-335.

Cartridge : .223 Rem. (SAAMI)
Bullet : .224, 55, Hornady FMJ-BT w/c 2267
Cartridge O.A.L. L6: 2.260 inch or 57.40 mm
Barrel Length : 16.1 inch or 410.0 mm
Powder : Hodgdon H335

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 65 18.00 2043 510 19320 6764 73.9 1.218
-18.0 67 18.45 2092 535 20429 7038 75.4 1.191
-16.0 68 18.90 2142 560 21601 7313 76.8 1.165
-14.0 70 19.35 2193 587 22840 7589 78.3 1.138
-12.0 71 19.80 2244 615 24152 7864 79.7 1.113
-10.0 73 20.25 2295 643 25541 8139 81.1 1.087
-08.0 75 20.70 2347 673 27011 8413 82.4 1.063
-06.0 76 21.15 2399 703 28569 8684 83.8 1.038
-04.0 78 21.60 2452 734 30217 8953 85.1 1.015
-02.0 80 22.05 2505 766 31962 9217 86.3 0.991
+00.0 81 22.50 2558 799 33817 9478 87.6 0.968
+02.0 83 22.95 2611 833 35780 9733 88.7 0.946
+04.0 84 23.40 2665 867 37863 9983 89.9 0.922
+06.0 86 23.85 2719 903 40059 10226 91.0 0.898
+08.0 88 24.30 2773 939 42421 10462 92.0 0.875
+10.0 89 24.75 2827 976 44911 10689 93.0 0.852

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 81 22.50 2727 908 40583 10062 94.7 0.896
Data for burning rate decreased by 10% relative to nominal value:
-Ba 81 22.50 2361 681 27867 8525 77.7 1.047

[35 Whelen]

I suppose it would depend on the use of the loads. If you're just plinking or target shooting out to 200 or so yds., the load is fine. Remember: it doesn't take much to poke a hole in a piece of paper.
If you're hunting with the load, you might be limiting yourself a little.

35W

[MEHavey]

55 grain FMJ-BT, over 22.5 grains H-335...

That's a full 2 grains under Minimum.
Where'd the load suggestion come from ?

[tri70]

I like to run 24.5 to 25 gr of H335 and get about 2800 fps from my mini 14 with a 16.25" barrel.

[armoredman]

I had exactly two loads to go from the Hodgdon info I downloaded, both 55 grain loads, on a SPR SP and an SFIRE, but I wasn't sure what the heck an SFIRE was, so I split the difference in the starting load between them as the SFIRE 55 grain load starts at 21.4, and the SPR SP starts at 23.0. This was from hodgdon.com, btw.
I've been told the "industry standard" for the 55 gr FMJ-BT bullets is 24.5 grains of H-335, which I will try. Thanks for the input.