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Need Montana Gold 55gr .223 load assist


Quick Draw McGraw

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Have ordered some MG 55grain FMJ bullets for my AR15. It has 20 inch stainless barrel with 1:8 twist. Previously loaded a different 62 gr bullet with Varget. Very accurate but meters poorly in my RCBS Uniflow and I had to weigh each charge it was so inconsistent. Thinking more towards using a ball powder for better metering such as WIN 748, H335, or BLC2. Rep at MG recommended BLC2. Anyone worked up a load using these powders? Please include OAL, charge weight etc. I will be using Lake City once fired brass, Winchester small rifle primers. Thanks,Bob.

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Another thumbs up for Ramshot Exterminator and the Montana Gold 55 grain.

I run 25.2 grains and load to mag length in my Rock River 20 inch 1 in 8 twist. It shoots a hair over a MOA and about 3150.

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When I first loaded .223, I got some Varget and AA2230 and some MG 55's. The AA2230 was more consistent for me so that's what I used. I had no trouble getting 3000fps with a comfortable load and that was enough for me to shoot out to 250yd with a red dot without any problems.

I later tried the same powder with SMK 69's and was shooting that out to 600yds with a scope and getting decent results. And at shorter distances, my ballistic curve is almost identical to the 55's which makes zeroing a lot easier.

It just seems to be a decent general purpose powder.

Edited by Graham Smith
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I use Accurate Arms XMR 2015 for my 55's. It is a bit faster than 2230, and likely in the same range as Benchmark. I am using 23.5 gr and I could not miss the 10" plates at 200 with a borrowed JP rifle.. It meters well and I get ~2300 rounds out of an 8 pounder.

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Just starting to work up a load with BL-C2 and MG 55's through a Sig 556 16" 1 in 7 twist barrel. First lot was 26 grains and 2.25OAL, 3 shot chrono avg. 2556 fps.

27.1 gr BLC2 gave me the best groups (around 2900 fps). 16" Bushmaster AR. This load also works good in my 18" Sabre.

I use TAC with 69gr SMK. Don't have my load book handy.

Edited by CocoBolo
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Well finally got my Montana Gold 55gn bullets and decided to try Hodgdon H-335. First things first. Montana Gold makes a great product. Bullets are well made and very consistent. Will be buying a lot more of these. I have a dealer account with ZERO Bullets for pistol bullets which are also excellent. After buying the MG rifle bullets I will obtain some of their pistol bullets to compare the 2. Anyway worked up a bunch of different loads starting at 22.5 gn through 24 gn. The 24 gn of H-335 using Lake City brass trimmed to 1.751 with Winchester small rifle primers and the 55gn bullet makes one ragged hole. COAL 2.248 I guess I will also try 24.5 & 25 gn to see if there is any improvement/difference. But the 24 gn H-335 makes a very nice, precise shooting load with the Lake City Brass. Thanks to everyone who provided advice here. Bob

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  • 3 months later...

Just starting to work up a load with BL-C2 and MG 55's through a Sig 556 16" 1 in 7 twist barrel. First lot was 26 grains and 2.25OAL, 3 shot chrono avg. 2556 fps.

I was getting 2950 roughly with 27.0 gr of BLC2 out of a 1:8 18" barrel. I was shooting 55gr Hornady FMJ w/c and was getting +/- 25 fps of the 2950. I then noticed in the Hornady book, which I don't have, that the max load that they list is 28.1 of BLC2! Hodgdon says 27.5 on the bottle, but either way, I think you can bump it up a little. I have since bumped mine up to 27.4 and loaded a bunch and then saw the info above. I haven't chronoed these or checked the grouping yet.

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  • 3 weeks later...

I have had great luck with Montana Gold 55gr bullets. My load is 24.1 gr of Accurate 2230 and CCI 450 primers. I use to use H355 but I had a hard time finding it for a while. I liked the 2230 so much I stuck with it. I have a 1 and 8 twist 20" barrel too. I have no problem making power factor and it's more accurate than I am.

Accurate 2230 meters out very well.

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  • 2 weeks later...

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