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TX, USA
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Posted: 7/30/2024 6:31:13 PM EDT
Good afternoon to all,
I have a Bushmaster 5.56 AR-15 with a 16 inch barrel. It is stock out of the box, a few hundred rounds through it. Brass cases feed, fire, eject just fine with no issue. TULA Steel cases get stuck in the chamber after firing just about every time. Once the gun gets hot it sticks every time. Note** I bought the ammo new several years ago to keep "just in case" jokes on me. I use a brass cleaning rod to poke out the fired case. Should I; 1, wipe off the cases with alcohol or acetone or some other cleaner just prior to firing and hope for the best 2, try to pawn off the other 500 rounds I purchased, 3 continue with a single shot rifle until the ammo is gone. any thoughts comments, ideas. thanks tom. |
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Posted: 7/30/2024 7:10:16 PM EDT
[#1]
Some guns run fine with steel, some don’t.
If you had 10k rounds I’d say find a bbl that eats it. With that lil bit, sell. I wouldn’t mess with wiping it down, but you could try cleaning the chamber well. You do have a chamber brush right? It might run if you do that. Might not. I’ve had one AR that didn’t like it, and the rest just ate it up. |
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USA
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Posted: 7/30/2024 7:27:12 PM EDT
[Last Edit: Normlizer]
[#2]
I would try this. Hellbender's Guide to the Ultimate AR Part 4: The Chamber
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TX, USA
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Posted: 7/30/2024 7:36:11 PM EDT
[#3]
I will begin scrubbing and testing
thanks |
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USA
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Posted: 7/30/2024 8:02:07 PM EDT
[#4]
Be aware that the above linked info is for NON-chrome lined chambers.
Polish a chrome lined chamber and you'll ruin the barrel. As above, some AR's just won't reliably run steel cased ammo. If yours's won't the best of the options is to not use it in that rifle. Either sell it or give it away. Better than possibly damaging a perfectly good rifle attempting to force it to use ammo it was never designed for. |
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TX, USA
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Posted: 7/30/2024 8:43:47 PM EDT
[#5]
well I can't afford another rifle, but getting rid of the ammo in question is possible. the gun runs fine with brass, anny make any weight, so I guess Ill dump the ammo and keep the gun.
Thanks to all. |
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Posted: 7/30/2024 9:52:59 PM EDT
[#6]
The problem with steel cases is they don't expand and seal the chamber like brass does.
I found out the hard way on my first AR. If those are lacquered cases that's another issue on a hot chamber, the lacquer melts, or so I've heard. I'd sell the ammo or just put it away and save it for another gun. |
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Posted: 7/30/2024 10:00:28 PM EDT
[#7]
The coating on modern steel ammo is not a problem and is not what causes stuck cases. This myth will never die.
Steel cases don't expand and seal out fouling as well as brass, fouled chambers cause stuck cases. Chamber dimensions and chamber cleanliness are 2 of the largest factors when running steel cased ammo. |
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USA
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Posted: 7/31/2024 7:01:19 PM EDT
[Last Edit: dfariswheel]
[#8]
"This myth will never die".
The people who think that lacquer will melt can't explain how it is that the Soviet bloc fired billions of rounds in full auto weapons with no melted lacquer gumming up chambers. |
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Posted: 7/31/2024 10:05:54 PM EDT
[#9]
Quote HistoryOriginally Posted By dfariswheel: "This myth will never die". The people who think that lacquer will melt can't explain how it is that the Soviet bloc fired billions of rounds in full auto weapons with no melted lacquer gumming up chambers. Poly coating does get scrapped off to cause a poly powdered fouling, and in regards to soviet bloc, X39 ammo has steeper side wall angle reduction from back to shoulder, so initial pull does release the ammo from the chamber a lot better. Also, lets face it, most X39 chambers are not on the tight side, but looser side wall dimensions to promote reliability, over accuracy, and in regards to bushmaster, there is a reason that LEO's stop buying them, when there where shipping with tighter cross wall dimensions and having jamming problems alone due to that. |
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OR, USA
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Posted: 8/1/2024 1:01:13 PM EDT
[#10]
I’d just set it aside for now once the gun has a few thousand on the barrel try it again. I’ve had multiple guns stick steel when new that ran the same ammo fine after few thousand rounds of brass.
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AZ, USA
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Posted: 8/1/2024 2:21:55 PM EDT
[Last Edit: brownbomber]
[#11]
Quote HistoryOriginally Posted By Nobody69s: The problem with steel cases is they don't expand and seal the chamber like brass does. I found out the hard way on my first AR. If those are lacquered cases that's another issue on a hot chamber, the lacquer melts, or so I've heard. I'd sell the ammo or just put it away and save it for another gun. This is a myth. Cold-worked steel cases do not relax as much as brass cases after firing, due to steels higher modulus of elasticity. The fired cases are larger than the chamber under ambient conditions, and most be yanked out with tremendous force. The lacquer is a lubricant to aid extraction. In no way do they fail to obturate. You can insert a fired steel case into your chamber and let the bolt fly home on it - I would recommend doing this with an AK, because you will probably have to smack the charging handle pretty hard with a deadblow hammer to get it out of there. A brass case basically just falls out of the chamber, with no perceptible resistance. |
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SD, USA
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Posted: 8/3/2024 2:49:32 PM EDT
[#12]
My only Bushmaster non-chrome lined barrel did this. The extractor ripped part of the rim off. Shot the rest of it in other uppers to get rid of it.
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Posted: 8/3/2024 2:52:15 PM EDT
[#13]
Quote HistoryOriginally Posted By madmac58: I will begin scrubbing and testing thanks Take a piece of cleaning rod, brush, add steel wool, solvent and chuck in drill. |
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Posted: 8/4/2024 4:43:01 AM EDT
[#14]
Buy an HK93 or a AK in 5.56.
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USA
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Posted: 8/4/2024 7:50:48 AM EDT
[#15]
My old Bushy did the same with Wolf.
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LA, USA
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Posted: 8/18/2024 5:45:31 PM EDT
[#16]
Carbine gas system? Are you over gassed?
I successfully fixed mine by going to a heavier BCG. |
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