Empty case stuck in AR chamber... help

[beeenbag]

so my first round fired in the 450 bushmaster was a failure.

Loaded the mag, chambered the first round, dropped the mag, pulled the bolt back, round ejected, all was well. So I load the mag back up, chamber the round and fire down range. Wasn’t sighted in, just function checking but I flip the gun to safe and stand there looking for my brass on the ground. Can’t see it anywhere. I find that odd so I go to clear the weapon to search for the lost brass more thoroughly, drop the mag, pull on charging handle and it’s locked up tight.

I only had 5 rounds outside with me, and four of them were still in the mag.

I have no idea how to get this out, it’s in there good. Used a plastic mallet on the charging handle while holding the release, I tried a cleaning rod down the barrel. Nothing.

Any help?

Edited to add: factory hornady 250g ftx ammo

 

[ugaarguy]

I'd separate the upper and lower. You're going to have to get the bolt carrier pulled back far enough to rotate the bolt enough to unlock it. Once the bolt is unlocked, then you'll need a slightly smaller than bore diameter brass rod to run from muzzle to chamber to tap out the stuck case.

 

[beeenbag]

I'd separate the upper and lower. You're going to have to get the bolt carrier pulled back far enough to rotate the bolt enough to unlock it. Once the bolt is unlocked, then you'll need a slightly smaller than bore diameter brass rod to run from muzzle to chamber to tap out the stuck case.

Yeah it’s that whole getting it pulled back far enough that’s an issue. I can’t budge it.

This is as far back as she comes...

 

[Coal Dragger]

Mortar it.

 

[MEHavey]

Mortar it.

+1

See
NOTE: How he uses the right hand thumb to hold the bolt release/catch open while the other hand slams the (closed stock) down onto the hard surface

 

[beeenbag]

Mortar it.

Just read about that and tried it. Nothing. I can get the carrier to move back and forth about an 1/8” and that’s it.

 

[beeenbag]

I’m starting to think it’s a bolt problem and not so much the case.

 

[MEHavey]

Are you holding bolt catch open ?
Are you babying* it ?

*(It's scary the first time)

 

[beeenbag]

Are you holding bolt catch open ?
Are you babying* it ?

*(It's scary the first time)

Yes holding the charging handle latch open...and at this point, trust me the babying is out the window.

Bout tore my thumb off That was holding the latch and put on gloves just for extra oomph

 

[beeenbag]

Okay, got it open. Used the mortar technique but taped the latch open and let her have it with both hands on a concrete floor, took about 8 licks, like driving a fence post.

Here’s the case...

 

[Coal Dragger]

Well good news, bad news.

Good news is that you got your stuck case freed up.

Bad news is that case has a belt like a belted Magnum, where there should be no belt.

I’m going to venture a guess that you have a major chamber dimension issue.

Is this gun a factory build or a home brew upper?

 

[JeffG]

Hmmmm....what stuck? Pressure, brass. chamber?

 

[beeenbag]

Well good news, bad news.

Good news is that you got your stuck case freed up.

Bad news is that case has a belt like a belted Magnum, where there should be no belt.

I’m going to venture a guess that you have a major chamber dimension issue.

Is this gun a factory build or a home brew upper?

It’s the team delta tactical “hound” upper. Came unassembled but can’t really mess up head spacing as long as barrel nut is torqued correctly.

 

[Coal Dragger]

Well I’d send it back. There is something wrong with that chamber.

 

[adcoch1]

It’s the team delta tactical “hound” upper. Came unassembled but can’t really mess up head spacing as long as barrel nut is torqued correctly.

Unless they cut the chamber too shallow, or in this case, possibly installed the barrel extension incorrectly. What load did you use? Possibly overpressure?

 

[beeenbag]

Okay so I made a dummy round real quick by pulling a factory load and removing the powder and primer in a full length sizing die. I didn’t have any other brass and didn’t want to use my new belted 450 bushmaster case as that’s the only empty one I own.

So the round will strip from the mag, and chamber, but the extractor won’t grab it. It just sits in the chamber. It will drop back out when the bolt is held back and gun tilted upward and juggled, but considering this round headspaces on the case mouth, I’m assuming the chamber is too long. What day you?

 

[Coal Dragger]

It’s a strait wall case so it should just drop out.

Is the extractor damaged?

 

[mjsdwash]

I know you got it out, but for reference, you absolutely can kick the bolt open on an AR despite what many think (I know I bought 1000 rounds of old Wolf), it took kicking the bolt open with my Carolina boots about 30 times before the charging handle bent, and even then it still worked. Used some visegrips to straighten it out, still in the rifle. Just a smaller target. Mortoring is faster and easier, and I have never seen a quality stock or tube damaged.

 

[beeenbag]

It’s a strait wall case so it should just drop out.

Is the extractor damaged?

The dummy round does just drop out, and no the extractor is good, not to mention stronger than I expected pulling that stuck case out.

The exctractor isn’t engaging at all. I’d bet anything the round is being shoved too far into the barrel before headspacing where the ejector can’t grab it. And when I fired it like that it let the round back out of the chamber far enough for the extractor to go over the case rim and bulge the case enough to get stuck and create my belted 450 case.

 

[beeenbag]

I don’t have any other ammo to try but here is the case length of the hornady ammo...

 

[BigBore44]

The new belted 450 magnum. Until Hornady picks it up, I’m not buying.

I’d definitely send it back to delta. I don’t think this is one you can fix.

 

[243winxb]

can’t really mess up head spacing as long as barrel nut is torqued correctly.

Different bolts, different headspace.

Is this your upper? www.deltateamtactical.com/Aero-Precision-Hound-Unassembled-AR-15-Engraved-Upper-Receiver-Kit-18-450-Bushmaster-124T-QPQ-Nitride-H-Bar-Trinity-Force-15-Keymod-Handguard-MFG-BY-DTT-CUSTOMS_p_7986.html

This Kit Features Aero Precision 458 Socom Engraved Upper Receiver

w/ An Enlarged Ejection Port To Reliably Cycle The Larger .450 Shell Casing,

Upper Receiver Does Have “458” Laser Engraved On Top Rail.


However, This Upper Will Also Work w/ .450 Bushmaster

?? Confusing.

 

[beeenbag]

Different bolts, different headspace.

Is this your upper? www.deltateamtactical.com/Aero-Precision-Hound-Unassembled-AR-15-Engraved-Upper-Receiver-Kit-18-450-Bushmaster-124T-QPQ-Nitride-H-Bar-Trinity-Force-15-Keymod-Handguard-MFG-BY-DTT-CUSTOMS_p_7986.html

?? Confusing.

Yes that’s the upper, and the bolt is the 450/458 from midway

 

[Coal Dragger]

The dummy round does just drop out, and no the extractor is good, not to mention stronger than I expected pulling that stuck case out.

The exctractor isn’t engaging at all. I’d bet anything the round is being shoved too far into the barrel before headspacing where the ejector can’t grab it. And when I fired it like that it let the round back out of the chamber far enough for the extractor to go over the case rim and bulge the case enough to get stuck and create my belted 450 case.

If the round was able to move that far forward in the chamber you would probably run into no primer ignition or light strikes.

Headspace may be correct, but the chamber is obviously not. Possible that you have an issue with the extractor riding up past the rim and being levered away from the rim by the case body since it is a rebated rim.

You could probably replicate that with the bolt and a dummy round outside the rifle. See if the bolt face is milled too deep.

 

[Coal Dragger]

Either way it shouldn’t be your problem to trouble shoot.

Send it back.