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Thread: steel case rim tore off, case got stuck in chamber.

  1. #1
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    steel case rim tore off, case got stuck in chamber.

    Today i got caught flat footed at the range while i was shooting some steel cased tula 55 grain. The extractor tore off a piece of the rim and caused the case to stay in the chamber and i did not have anything to take it out with. The rifle is fairly new with only 250 rounds through it and prior to to this happening i was firing some q3131, only about 30 rounds, however. The gun has had a mix of tula, q3131, and federal bulk 223. From inspecting some cases i can see some scratches on some cases, a few have dents, and the steel cased ammo has visible carbon on the outside of the case. Some also show marks on the case head.

    Details:
    Psa 16" midlength upper, .078" gas port
    H huffer
    Stock spring
    Bcm bcg

    It did not take much to get the case out when i got home, i uses a wooden dowel that fit very snuggly in the bore and with a few taps with a 2.5 pound weight it came right out. The bcm bcg was purchased brand new from bcm and as far as i know it does not have the o ring installed, i have never taken apart the bolt. Was it just a bad case or could the extractor be providing to much tension?





  2. #2
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    Sounds like a bad case. What position is the gun ejecting the brass too?

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    The dents in the brass cases look like dents from hitting the shell deflector. The scratched being linear, look like mag lip scratches from being stripped from GI mags. Are you using GI mags?

    I've heard/been told/read mixing in steel after shooting brass can cause this, but I've never personally had it happen. I'd clean your chamber and stick to one type during a session. If it happens again after that, you may want to have your chamber gauged.

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    Quote Originally Posted by SpankMonkey View Post
    Sounds like a bad case. What position is the gun ejecting the brass too?
    3 to 4:30
    Quote Originally Posted by Pork Chop View Post
    The dents in the brass cases look like dents from hitting the shell deflector. The scratched being linear, look like mag lip scratches from being stripped from GI mags. Are you using GI mags?

    I've heard/been told/read mixing in steel after shooting brass can cause this, but I've never personally had it happen. I'd clean your chamber and stick to one type during a session. If it happens again after that, you may want to have your chamber gauged.
    Yes they are brand new gi mags. Why would mixing ammo cause this?

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    Looks to me like the throat might be a bit tight.
    Jack Leuba
    Director, Military and Government Sales
    Knight's Armament Company
    jleuba@knightarmco.com

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    Quote Originally Posted by black22rifle View Post
    3 to 4:30


    Yes they are brand new gi mags. Why would mixing ammo cause this?
    I do t want to get out of my lane, so I'll just say there are lots of mixed theories, but it is generally considered a bad idea.

    The dents and scratches look normal, but in the pic of the brass case heads, are they damaged? They look pulled on one edge but I can't tell on my phone?

    If they are, then like F2S said, you're chamber appears to be undersized.

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    steel case rim tore off, case got stuck in chamber.

    OP:
    FYI, A similar "stuck-case" happened to me back when I had a new AR and got some Tula ammo to go with it (I had shot Brass-cased before).
    Nowadays I always carry a cleaning rod with me incase I get another stuck, but after Hundreds and hundreds more rounds (Tula/Wolf) it never happened again.
    Quote Originally Posted by Pork Chop View Post
    I've heard/been told/read mixing in steel after shooting brass can cause this, but I've never personally had it happen. I'd clean your chamber and stick to one type during a session. If it happens again after that, you may want to have your chamber gauged.
    Before, I would have said it was a myth, but... it is exactly what happened to me. It Never happened again, though.
    Last edited by SurplusShooter; 10-04-13 at 15:30.

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    Quote Originally Posted by SurplusShooter View Post
    OP:
    FYI, A similar "stuck-case" happened to me back when I had a new AR and got some Tula ammo to go with it (I had shot Brass-cased before).
    Nowadays I always carry a cleaning rod with me incase I get another stuck, but after Hundreds and hundreds more rounds (Tula/Wolf) it never happened again.

    Before, I would have said it was a myth, but... it is exactly what happened to me. It Never happened again, though.
    Well, that's why I hesitated there, because its never happened to me and I do it (mix) from time to time, but for the purposes of helping diagnose, it seems like a good starting point.

    Steel case cheap ammo can have issues all its own, but I shoot a couple cases of it a year and rarely have a stoppage. It's biggest drawback is its just filthy.

    I'd clean it and stick to one ammo type and see if it happens again, personally.

  9. #9
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    Quote Originally Posted by Failure2Stop View Post
    Looks to me like the throat might be a bit tight.
    what gives you that idea?

    Quote Originally Posted by Pork Chop View Post
    I do t want to get out of my lane, so I'll just say there are lots of mixed theories, but it is generally considered a bad idea.

    The dents and scratches look normal, but in the pic of the brass case heads, are they damaged? They look pulled on one edge but I can't tell on my phone?

    If they are, then like F2S said, you're chamber appears to be undersized.
    yes the case heads are a bit damaged. I could not get a really good picture of it. They indeed are "pulled" on one edge, it also looks like something clawed at it. How would an undersized chamber produce this.

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    Unless you shoot steel case ammo from the start, aren't most folks, on average, shooting steel after shooting brass?

    That being the case, shouldn't there be a lot more incidents like the above given the round count in the tens of thousands?

    Or, am I overlooking something?

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