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Thread: one oclock ejection

  1. #1
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    one oclock ejection

    The gun is a Charles Daily 16" Carbine, less then 3000 rnds, semi BCG, H buffer.
    What we have done so far. cleaned barrel and chamber, swapped in my LMT auto BCG. still happens.
    Swapped out the buffer with a Carbine buffer, still happens.
    The brass isnt even hitting the deflector, but it is hitting on the back of the ejection port.
    There is no sign of gas leaking around the FSB.

    Anybody have any suggestions on what else I could try.

  2. #2
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    two different bolts and still the same issue......wondering myself...

  3. #3
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    Stop wasting time worrying about ejection patterns - it is nonsense.

    http://m4carbine.net/showthread.php?p=1102317

  4. #4
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    Quote Originally Posted by DeltaSierra View Post
    Stop wasting time worrying about ejection patterns - it is nonsense.

    http://m4carbine.net/showthread.php?p=1102317
    Huh, I missed the thread..
    So this thread will go to delete city.

    Can ya do that for me mods?
    Last edited by CDDM416; 01-17-12 at 18:49.

  5. #5
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    It appears that I remain one of the few who still understand that ejection pattern holds valuable information.

    Every machine has expected performance standards given optimum operating conditions.

    Ejection pattern is one of those standards that is indicitave of the performance of the machine. A change in ejection pattern is indicitave of a change in the operating conditions of the machine, a change in it's power source, or the conditions of en environment outside the machine that effect its operation.

    That being said, the optimal ejection pattern of an AR with a brass deflector is to the 3 o'clock position. This is assuming that all parts are new, within spec, and unfouled.

    When the ejection pattern changes, there are always different aspects of the machine that can affect its operating perameters or mimic other aspects.

    In the case described in the OP, the brass ejecting forward like that is usually indicitive of an over gassed gun. Meaning that bolt speed is so fast that the brass is so far back in the receiver by the time that it is leaving the ejection port that it is hitting the rear of the ejection port and and deflecting forward instead of straight out the side as it should.

    Excessive bolt speed can be mimicked by a weak ejector spring or some sort of fouling of the ejector that prevents the ejecting brass from exiting the ejection port when it's supposed to. It can also be mimicked by a worn action spring (buffer spring)

    My question is if the rifle has been behaving like this for it's entire round count or if this is new behavior.

    If it's new behavior, i'd check your action spring since you've changed out the bolt and carrier and still experience the same behavior. Measure it and check length per the TM, replace as necessary.
    Last edited by GrumpyM4; 01-18-12 at 03:38.

  6. #6
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    Ah, the thread still lives.

    Im pretty sure we did swap the spring. Ill have to get with him and ask.

  7. #7
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    Quote Originally Posted by GrumpyM4 View Post
    It appears that I remain one of the few who still understand that ejection pattern holds valuable information.
    The problem is that it holds only a piece of the big picture. And some ass wipe put a MS paint diagram on the gun forums and has people all assed up if their gun doesn't match the stupid image's ideal ejection pattern.

    So you end up with guys installing a bunch of aftermarket trash in their guns and drifting even further out to sea.

    Ejection direction taken in context with all available info can tell you something for sure. I mean... I can put my can on my carbean and watch the brass move from 2:30 to 1:30 and start flying farther away... obviously the bolt speed is much greater.
    "You people have too much time on your hands." - scottryan

  8. #8
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    Don't sweat it. However, high extractor tension (x-power spring and o-ring) can induce this in some guns.

  9. #9
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    Try an H2 or H3 and see if it moves to the rear. Heavier buffers tend to move the pattern to the rear.
    Last edited by Heavy Metal; 01-18-12 at 11:05.
    My brother saw Deliverance and bought a Bow. I saw Deliverance and bought an AR-15.

  10. #10
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    If your AR is ejecting forward and it concerns you remove the O-ring or extractor D-fender from the extractor spring.
    Chief Armorer for Elite Shooting Sports in Manassas VA
    Chief Armorer for Corp Arms (FFL 07-08/SOT 02)

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