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Max Online: 16728 @ 03/25/12 08:51 AM
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#5573597 - 01/30/15 02:50 PM Alright gas gunners. Favorite powder for AR-15 .223?
FiremanJG Offline
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Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
55 gr and 69 gr bullets

Loaded for precision on a 16" barrel, 10" suppressor.

Decided it was high time I brought the AR out of the back of the safe and build a load for it. I would normally go straight to Varget in a bolt action, but this isnt a bolt action.

So what say ye?
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#5573680 - 01/30/15 03:53 PM Re: Alright gas gunners. Favorite powder for AR-15 .223? [Re: FiremanJG]
kmon1 Online   content
junior

Registered: 09/27/06
Posts: 20290
Loc: Texas
Try your Varget with the 69gr bullets, will probably work well near max load with that bullet weight.
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#5573691 - 01/30/15 04:00 PM Re: Alright gas gunners. Favorite powder for AR-15 .223? [Re: FiremanJG]
Buzzsaw Offline
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Registered: 06/29/11
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Loc: Frisco, Texas
just got some AR Comp, will let you know with the 69gr...oops it will be my 20 bolt gun

So far Varget and RE-15
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#5573698 - 01/30/15 04:08 PM Re: Alright gas gunners. Favorite powder for AR-15 .223? [Re: FiremanJG]
kmon1 Online   content
junior

Registered: 09/27/06
Posts: 20290
Loc: Texas
Mine has a 1:7 twist and never have loaded the 55gr for it, 69 and 75 gr so far. Next powder I am planning to try is CFE223
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#5573812 - 01/30/15 05:09 PM Re: Alright gas gunners. Favorite powder for AR-15 .223? [Re: kmon1]
FiremanJG Offline
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Registered: 12/16/08
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Thanks fellas!

Dove into the Sierra manual on loading for the AR-15 and firmed up what I thought was true. Saw that Varget is listed as a .223 for AR-15 (Sierra seperates .223 bolt action and .223 AR-15, Greatness!) Then I read the barrel stamp 1-9. Not trusting that, I verified twist and that is correct. The 69 gr SGKs show 1:7-1:10 twist. So far it looks like I'm good to go. Now I need to fire five rounds (and catch the brass) so that I can set the FL die accordingly. Go from there.
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#5574239 - 01/30/15 09:35 PM Re: Alright gas gunners. Favorite powder for AR-15 .223? [Re: FiremanJG]
603Country Online   content
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Registered: 07/03/12
Posts: 4869
Loc: Central Texas
I'm laughing at "catch the brass". Had a guy over here a while back, and he wanted to sight in his AR. He didn't have a lot of ammo, so by the time he had it dialed in, the ammo was about used up. I had just loaded up a couple hundred of my favorite load, so I said he could try these out. He ran about 10 rounds through it in a heartbeat and all the brass went on the dirt. Geez, my Lapua brass in the dirt. I honestly had forgotten that was gonna happen. I'm pretty picky about my brass.

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#5575135 - 01/31/15 02:52 PM Re: Alright gas gunners. Favorite powder for AR-15 .223? [Re: FiremanJG]
daniel1381 Online   content
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Registered: 03/07/12
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so that I can set the FL die accordingly. Go from there. [/quote]

explain that for me pls!
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#5575379 - 01/31/15 05:13 PM Re: Alright gas gunners. Favorite powder for AR-15 .223? [Re: FiremanJG]
tenyearsgone Offline
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Registered: 04/21/13
Posts: 1213
CFE 223 or Win 748.

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#5575386 - 01/31/15 05:15 PM Re: Alright gas gunners. Favorite powder for AR-15 .223? [Re: FiremanJG]
jdk1985 Online   content
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Registered: 08/15/11
Posts: 11704
Loc: Waco, TX
I've used H335 for everything from 55-75gr and it has worked flawlessly for me.

As for setting the FL die correctly - I don't worry about this with ARs. I make sure I completely cam over and size the brass the max amount. That makes sure that the base has been sized properly to avoid any chambering issues. 223 brass is so readily available that I don't mind the possibility that I might get one less firing on it by sizing more than the bare minimum.

All that to say, if you do not completely FL size, make sure to check the base to make sure it has been sized sufficiently to chamber reliably. I know I'm preaching to the choir.

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#5575499 - 01/31/15 06:20 PM Re: Alright gas gunners. Favorite powder for AR-15 .223? [Re: jdk1985]
DStroud Offline
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Registered: 11/02/11
Posts: 1156
Loc: Waco
Originally Posted By: jdk1985
I've used H335 for everything from 55-75gr and it has worked flawlessly for me.

As for setting the FL die correctly - I don't worry about this with ARs. I make sure I completely cam over and size the brass the max amount. That makes sure that the base has been sized properly to avoid any chambering issues. 223 brass is so readily available that I don't mind the possibility that I might get one less firing on it by sizing more than the bare minimum.

All that to say, if you do not completely FL size, make sure to check the base to make sure it has been sized sufficiently to chamber reliably. I know I'm preaching to the choir.


I agree with this completely. Trying to size just enough to chamber is fine with bolt's but semi-auto just FL size because it's no fun getting that round that was sized to minimum and sprang back slightly and now has your action jammed.

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#5575586 - 01/31/15 07:17 PM Re: Alright gas gunners. Favorite powder for AR-15 .223? [Re: daniel1381]
FiremanJG Offline
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Registered: 12/16/08
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Loc: Wolfe City, TX
Originally Posted By: daniel1381
so that I can set the FL die accordingly. Go from there.


explain that for me pls! [/quote]

Take brass fired in that chamber, and measure the length from case head to the middle of the shoulder using the Hornady headspace comparator attached the caliper. Get an avaerage over the five brass. Set the Full Lenght sizing die to bump the shoulders back .003". Brass flows forward .003" during the next firing and gets forced back .003" on the next sizing.

Yes brass doesnt get over-worked, but that brass will yeild more velocity, on the same powder charge, as brass that had to flow .010" or more as some of it has done in the past. I do this for every rifle. Granted they are bolt actions, but as violent as an AR chambers and ejects I suspect it will work for it is well.
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#5575744 - 01/31/15 08:37 PM Re: Alright gas gunners. Favorite powder for AR-15 .223? [Re: FiremanJG]
DStroud Offline
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Registered: 11/02/11
Posts: 1156
Loc: Waco
I think your method will work "maybe" a couple of rounds of reloading. But just like in Bolt guns they will start to get sticky closing at some point and as you noted you are checking based off an average so some will be longer than others. You don't have the camming action of a Bolt to force them home so your jammed at that point. Now if you are willing to measure each round after loading and relegate the over-size rounds to use in Bolt guns then all is good... that is what I do. I am Fully sizing all and still get rounds due to fatigued brass or other reasons that won't fit.
You could also anneal after every 2-3 loadings too but that's too much trouble in the volumes I load and besides I have 15,000 pieces of brass laying around.
Just say'n from my personal experience but carry on....

some folks just have to pee on the electric fence cheers

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#5576076 - 02/01/15 07:05 AM Re: Alright gas gunners. Favorite powder for AR-15 .223? [Re: DStroud]
FiremanJG Offline
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Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Did you miss read?

The brass will be three thousandths shorter than what it flowed to in the chamber. Never in a bolt gun is there sticky closing. I FL size it every time to that length.

My Giraud annealer is slated to be delivered Feb 16.
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#5576216 - 02/01/15 09:24 AM Re: Alright gas gunners. Favorite powder for AR-15 .223? [Re: FiremanJG]
ChadTRG42 Online   happy
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Registered: 09/16/09
Posts: 9419
Loc: Lewisville, TX
Jason, I would say try your sizing method and see if it will work for you. AR's are a totally different animal than a bolt gun when it comes to sizing. They do not like a tight fit. You will also have to worry about the case web area when not fully FL sizing. The brass can hang up in the case web area (about 1/8" above the extractor groove on the case wall) and prevent it from chambering. I have seen this on 223 and 308 AR's. I'm not saying your method won't work. But you will definitely want to chamber check most of your rounds after sizing and after loading. I know I will not gain any benefit to a partial sizing for a gas gun. You will most likely have a round or two that will not chamber, and it will lock up the rifle during firing (and it's a PITA to unjam). And the gas gun chews up brass pretty bad, and you will get reduced loads from it. So partially FL sizing the brass for multiple reloads for a gas gun may not be worth it. Try it and see. I know I will not risk it and do a FL size on all my AR brass.
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#5576235 - 02/01/15 09:38 AM Re: Alright gas gunners. Favorite powder for AR-15 .223? [Re: FiremanJG]
jdk1985 Online   content
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Registered: 08/15/11
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Like I said....

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