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Ar issue
#4920639
01/20/14 01:21 AM
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Joined: Apr 2011
Posts: 3,234
webstertroy
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OP
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Took my ar to the range first time today..put first mag in pmag... Was loaded with Tula ammo shot first round the casing did not come out.. I racked it shot again and thing... I lubed it up someone shot 15 more rounds with something happening... That point I switched mags and to brass ammo... Shot 5 rounds it FTf one time and then did not lock bolt back on last round... I ended up shooting 100 rounds down it and thur half way thur the mags it would not pick up a round but the bolt started to stay open when mag was empty... So the issue I left with is that sometimes it doesn't pick up a round any ideas??? I used new pmag and steel mags
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Re: Ar issue
[Re: webstertroy]
#4920650
01/20/14 01:24 AM
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Joined: Feb 2007
Posts: 26,563
JCB
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Sounds to me like a gas issue. Make sure your gas tube is clean and clear. Make sure your gas block is lined up over the gas port in the barrel correctly.
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Re: Ar issue
[Re: webstertroy]
#4920655
01/20/14 01:26 AM
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Joined: Apr 2011
Posts: 3,234
webstertroy
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It's a new gun.... Never shot it before
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Re: Ar issue
[Re: webstertroy]
#4920670
01/20/14 01:33 AM
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Joined: Jan 2007
Posts: 26,280
KRoyal
Texoma Legend
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Texoma Legend
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What brand is it? Was it built by a company or individual? I would say it's the Tula ammo I had exact same problem with my spikes, but only with that ammo.
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Re: Ar issue
[Re: KRoyal]
#4920689
01/20/14 01:40 AM
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Joined: May 2009
Posts: 4,243
DallasShootingSupplies
Extreme Tracker
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Most guns need broken in first before they will shoot Tula. Fire 200-250 rounds of full power 556 before shooting steel.
Tula is excellent practice ammo, but is weak.
Last edited by DallasShootingSupplies; 01/20/14 01:41 AM.
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Re: Ar issue
[Re: webstertroy]
#4920705
01/20/14 01:48 AM
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Joined: Feb 2013
Posts: 441
tromix8
Bird Dog
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Bird Dog
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I suspect it's an ammo problem. That Russian stuff causes problems in ar's all the time. I have shot thousands of rounds of ammo through my Colt but if I run one mag of that lacquered case Russian it cooks the lacquer in the chamber. Don't get me wrong, I like cheap ammo too but I leave it for my .223 AK when it comes to Russian ammo.
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Re: Ar issue
[Re: webstertroy]
#4920706
01/20/14 01:48 AM
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Joined: Apr 2011
Posts: 3,234
webstertroy
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It's a cmmg lower and red arms upper... I lubed it 2 times to make sure it was good...
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Re: Ar issue
[Re: webstertroy]
#4920708
01/20/14 01:49 AM
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Joined: Apr 2011
Posts: 3,234
webstertroy
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I shot Tula in my other ar all the time no issue
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Re: Ar issue
[Re: webstertroy]
#4920743
01/20/14 02:00 AM
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Joined: Feb 2013
Posts: 441
tromix8
Bird Dog
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Bird Dog
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Try and run some decent brass through it and see if you have a different result. Russian ammo has been a notorious problem child for years in plenty of AR's.
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Re: Ar issue
[Re: webstertroy]
#4920758
01/20/14 02:07 AM
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Joined: Jul 2011
Posts: 968
Buckeyesgt
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Gas rings on the bolt are all offset? I start with the simple things first. Sorry if you know this.
U.S. Army 90-94 98G Russian U.S. Army Reserve 94-98 37F
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Re: Ar issue
[Re: webstertroy]
#4920769
01/20/14 02:09 AM
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Joined: Aug 2012
Posts: 15,593
TexFlip
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Were both mags the same brand? I had this issue with Sig polymer mags, I swore up and down it must of been the cheap steel ammo until I changed back to my factory mag. No issues with any other magazines, so I sold the Sig mags on gunbroker about this time last year for about $50 a pop.
Just to make sure that it is done thoroughly, I go both ways.
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Re: Ar issue
[Re: webstertroy]
#4920776
01/20/14 02:11 AM
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Joined: Apr 2011
Posts: 3,234
webstertroy
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My buddy used my bolt in his ar with no issue
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Re: Ar issue
[Re: webstertroy]
#4920780
01/20/14 02:12 AM
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Joined: Aug 2012
Posts: 15,593
TexFlip
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I know you had this issue with both mags, were they the same brand? What brand were they?
Just to make sure that it is done thoroughly, I go both ways.
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Re: Ar issue
[Re: webstertroy]
#4920786
01/20/14 02:13 AM
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Joined: Jan 2007
Posts: 26,280
KRoyal
Texoma Legend
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Texoma Legend
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One was a pmag and one was Aluminum so don't think they were same brand.
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Re: Ar issue
[Re: webstertroy]
#4920792
01/20/14 02:14 AM
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Joined: Apr 2011
Posts: 3,234
webstertroy
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One was pmag one was steel gi mag
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Re: Ar issue
[Re: webstertroy]
#4920811
01/20/14 02:19 AM
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Joined: Aug 2012
Posts: 15,593
TexFlip
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Dang, didn't catch that about the mags. Could be buffer weight.
Just to make sure that it is done thoroughly, I go both ways.
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Re: Ar issue
[Re: webstertroy]
#4921117
01/20/14 03:45 AM
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Joined: Feb 2013
Posts: 441
tromix8
Bird Dog
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Bird Dog
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Nothing to do with the buffer if it's not extracting the casing from the chamber. The casing is getting stuck in the chamber on a new gun because the Russian ammo is lacquered and is cooking the lacquer inside the chamber or the newer steel case ammo has expanded just enough to stick. It may clear up after enough rounds are put through and the tolerances lighten up or it may not. My Colt SBR will not shoot the lacquer stuff period.
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Re: Ar issue
[Re: webstertroy]
#4921158
01/20/14 04:06 AM
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Joined: Jan 2012
Posts: 2,251
DeRico
Mobius 1
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Mobius 1
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Tula isn't lacquered. Last I checked Monarch was lacquered, but I agree that the steel cased ammo is causing your FTE. Here's a review of Brass vs Steel Read about why Tula doesn't make the full 10k shoot.
Last edited by DeRico; 01/20/14 04:07 AM.
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Re: Ar issue
[Re: webstertroy]
#4921239
01/20/14 05:13 AM
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Joined: Nov 2007
Posts: 6,203
Koenig
THF Trophy Hunter
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THF Trophy Hunter
Joined: Nov 2007
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Sell it. Get an AK. Your Welcome.
never trust a man that rents pigs....
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Re: Ar issue
[Re: webstertroy]
#4921537
01/20/14 02:56 PM
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Joined: Feb 2007
Posts: 26,563
JCB
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It's a new gun.... Never shot it before In that case I would do what others have said and break it in good with some good ammo. The Russian stuff is known for not being all that consistent and can cause those type of symptoms.
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Re: Ar issue
[Re: webstertroy]
#4921718
01/20/14 04:28 PM
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Joined: Nov 2011
Posts: 1,269
GriffGruff78
Pro Tracker
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ARs like to run fairly wet. If you don't have some grease on the bearing surfaces of your BCG you can get short stroking with a brand new rifle. I doubt you have anything to worry about, this is probably just an issue related to the break-in period.
About steel-cased ammo: I think it's been disproven that lacquered or polymer coated casings have any effect on the function of the rifle. Steel definitely has different metallurgic properties from brass, however. Brass expands when the charge deflagrates, then "snaps-back" slightly. Steel doesn't expand as much as brass, but it stays at its maximum "blown-out" diameter when fire formed rather than "snapping back". The result is that you don't get the same chamber seal that you get with brass (which CAN make the gun act like it's under gassed), so you can have little bits of carbon deposited between the chamber and the casing and if your chamber has any little rough patches or machining marks the blown-out steel will grab onto them and can require some cajoling to let go. After the chamber has worn-in a bit that shouldn't be as much of an issue.
One other thing, do you have a .223 chamber? The circumferential dimensions are ever-so-slightly smaller with .223 and can exacerbate extraction problems with steel cased ammunition.
Also, ammo from the Tula factory (Wolf, Herters, Tulammo, etc.) has been notorious for inconsistent powder loads. I ran a box of 20 over my chrony and had A LOT of velocity fluctuation, almost 300 fps extreme spread. Some people have blamed detonations on Tula for too little powder in the casing, but I don't know enough about that other than to say I wouldn't dismiss it out of hand.
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Re: Ar issue
[Re: webstertroy]
#4921770
01/20/14 04:53 PM
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Joined: Jul 2011
Posts: 2,870
Ryan81
Veteran Tracker
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If it's not the BCG or the mag, I would check the gas block/tube if more ammo doesn't fix the issue.
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