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 55 Grain .223 Loads with AA2230 for AR-15
AR-Admirer  [Member]
9/6/2008 8:53:49 AM
I bought several pounds of AA2230 a few years ago and am finally ready to start using some of it for loads in my Bushmaster M4's.

I will mainly use 55 grain FMJ bullets. Google searches indicate that many find 24.5 grains of AA2230 to be a very good load. Max according to Accurate is 25.0 grains.

What is your experience with AA2230 and what is your pet load?

I'm not looking for a hot load - just reliable and accurate. I will take all the normal precautions. Just wondering what your experiences are with this combination.
AssaultRifler  [Team Member]
9/6/2008 9:20:52 AM
I use AA2230. My advice make some test loads say 10 rounds each in 4 or 5 increments from min starting load to max load of 25.0 grains, example:

10 x 22.5 gr
10 x 23.0 gr
10 x 23.5 gr
10 x 24.0 gr
10 x 24.5 gr
10 x 25.0 gr

Shoot them all, the lighter loads may or may not cycle your gun. Then from those loads that do, settle on the most accurate load and bam! There's your pet load.

One of those will become your pet load. From your post looks like you're just looking a single load datum and settle on it without making and testing test loads. Do the homework.
AlaskaJohn  [Member]
9/6/2008 9:28:58 AM
I've use AA2230 with good results.

55.0g Hornady FMJBT
LC Brass
CCI #41 primer
25.0g 2230 (temperatures here rarely exceed 70F)
Chrono - MV: 3046 fps / SD: 44 fps / 16in barrel

Federal XM193
Chrono - MV: 3143 / SD: 11 / 16in barrel
Uni-Vibe  [Member]
9/6/2008 10:52:32 AM
Temperatures here rarely exceed 105 F. Does that mean we have to run weaker loads?
BruceLeroy  [Member]
9/6/2008 11:10:29 AM
I just worked up lots of loads for this same setup: 55gr FMJ with AA 2230.

I aimed for a light load that still groups well. 23.5 grains of powder is what worked for me. I pulled several sub inch groups at a hundred yards so I felt comfortable with that.

I had several loads from 24-25 display characteristics of overpressure so I stayed low.

I also just reloaded 150 rounds at 23.5 grains and went to shoot them yesterday. They performed great out of my SBR and then at 100yds. I took my 16"er over to the 200 yard line and pulled a 1.8" three shot group before calling it a day.
WesDesRat  [Team Member]
9/6/2008 7:05:40 PM
FWIW.... I shoot 24.5gr under a 60gr v-max bullet with great results @ around 3000 fps in a 20" gun. Its warm, but shoots fine even in 100+ degree heat--no primers popping or major pressure signs.

You'll find some data that suggests 26.0gr is the max with 55gr pills, But 24-25gr is plenty, and you'll get 2900+ from a 20" gun with 24.5gr in most cases.

In my case, I found accuracy was better at the hotter end of the charge weight range.
mikeyonthemadone  [Member]
9/6/2008 7:43:37 PM

Originally Posted By AssaultRifler:
I use AA2230. My advice make some test loads say 10 rounds each in 4 or 5 increments from min starting load to max load of 25.0 grains, example:

10 x 22.5 gr
10 x 23.0 gr
10 x 23.5 gr
10 x 24.0 gr
10 x 24.5 gr
10 x 25.0 gr

Shoot them all, the lighter loads may or may not cycle your gun. Then from those loads that do, settle on the most accurate load and bam! There's your pet load.

One of those will become your pet load. From your post looks like you're just looking a single load datum and settle on it without making and testing test loads. Do the homework.



+1-work'em up. I found that to match my WC844 (H335) velocities it only took 23.8 grains of 2230 versus 24.6.


Mikey
TimpAR  [Member]
9/6/2008 10:09:34 PM
In my 26" Varmint rifle, 24.5 gr. of AA2230 pushing a 55 FMJ Hornady gives the best accuracy, chrono'd at about 3250.
AR-Admirer  [Member]
9/7/2008 9:44:53 PM
Thanks for all the responses. I fully intend to work up the load. I just wondered where people have settled.

The variety of reloading data amazes me. Some people find midrange data hot while others use loads that are much higher than maximum - all from the same type of rifle. The reloading manuals vary quite a bit from each other.

I'm going to load some .223 with AA2230 this week and shoot them Friday. I'll let you know what I find out.

Other responses appreciated.
billyhill  [Team Member]
9/8/2008 7:45:00 AM
2230 is one of those powders you need to be real careful about where you get your data and how old it is. Some of the published data is nuts. Lyman 47 list loads well above 27 grains, I maxed out at 25gr and ,y final load was less than that. Makes you glad you worked that load up when things like that happen.

Also, be careful about mixing or confusing data from 2230 and 2230C and be careful about getting data from those that may have. They are not the same.
AR-Admirer  [Member]
9/14/2008 4:52:43 PM
I loaded rounds last night from 23.5 grains to 25.0 of AA2230 and will test them out this week in my 16" Bushmaster upper/Stag lower.

I accidentally used some CCI 400 primers. I probably should have used magnum or artillery primers with the ball powder. I haven't had any trouble with 400s with H335. I live in a warm climate.

I used Winchester 55 FMJs and loaded them to 2.250" but didn't crimp them. I have good case neck tension.
ballbags  [Member]
9/14/2008 5:21:11 PM
i use a RRA entry tactical witha 1/9 twist hornady 55 gr pills and AA 2230 poweder tested federal xm193 averaged 3076.6 fps with a hi of 3114 and a low of 3038 fps so that was my standard i worked up to 25.2 grains of aa 2230 with an average of 3070 fps hi of 3133 and a low of 3005 fps with winchester primers. which is pretty darn close to the federal xm193
my next batch will be 25.1 grains of aa2230 my col is 3 thousands of an inch either way of 2.45 just my preference i will also be switching to cci # 41 primers have no test results to post yet but i will i like hornady bullets better they seem to have more lenght consistency but then again as with this damm kids computer i have no idea what im doing
AR-Admirer  [Member]
9/14/2008 9:53:30 PM
I'm using Winchester 55 FMJ bullets. They can be pretty inconsistent in length but make good inexpensive short range blasting bullets. I've got some Hornady and Speer FMJ bullets that seem a little more consistent.
AR-Admirer  [Member]
9/18/2008 7:31:03 PM
I got to the range a couple of days ago to test some AA2230 loads. My results are not scientific. Your results may vary.

Bushmaster 16” chrome-lined upper/new Stag lower
Powder: AA2230
Primer: CCI 400 (non magnum) Might have been a little more consistent with magnum or arsenal primer. Consistency was good, no problems.
Bullet: Win 55 FMJ
Case: Winchester
OAL: 2.250” no crimp
5:30 p.m., 80 degrees, Shooting Chrony

23.5 gr. - 2,880 fps
24.0 gr. - 2,947 fps
24.5 gr. - 2,984 fps
25.0 gr. - 3,020 fps (not enough shots chronographed)

No signs of excessive pressure. Some primers were a little flattened but not cratered or pierced (more of a case headspace issue, I think). Velocities were higher using less powder with AA2230 than H335 (in my experience)

I can’t really test for accuracy but shot a real nice group with the 24.0 grain load. Recoil was mild.