Is the 336 rear firing pin supposed to be centered
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  1. #1
    Tenderfoot
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    Is the 336 rear firing pin supposed to be centered

    A troubleshooting post said it should be and might cause misfires. What do you think? Is it the top spring pushing down or the lift pushing up so pin not lined up? Thanks

  2. #2
    Deadeye
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    Welcome Rea.
    Post some sharp pictures of the strike crater to better answer your question.

    Better yet a picture of the Rear Firing Pin.
    Last edited by Ojaileveraction; 08-03-2019 at 12:38 AM.
    Tim​

    "There Are More Things in Heaven and Earth,
    Than Are Dreamt Of In Your Philosophy."

    Power to the proper people at 600 yards

  3. #3
    Tenderfoot
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    The pin sits as low as it will go
    Attached Images Attached Images

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    This is a normal appearance. If your rifle fires, it's all working. When the lever pushes the locking block up into place in the bolt mortise, it straightens the rear firing pin into alignment. Your rifle is OK if the primers are receiving a fairly centered indentation. A little off dead center is fine, there's actually more priming compound in contact with the dimple.

    Here's how it all works:
    Screenshot 2017-09-25 at 1.44.13 PM - Edited (1).png
    Last edited by rob42049; 08-03-2019 at 08:27 AM. Reason: added pic
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  6. #5
    Tenderfoot
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    The pin sits as low as it will go

  7. #6
    Tenderfoot
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    If the case is only neck sized will that take care of any headspace problem? It passed the test where you close the bolt on a partially inserted dead primer.

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    Quote Originally Posted by Rea View Post
    If the case is only neck sized will that take care of any headspace problem? It passed the test where you close the bolt on a partially inserted dead primer.
    Invest in headspace gauges. I have several sets. Forster sells them, and they're lifetime quality. If you're new to Marlins, it sounds like you either have a problem, or you are overthinking the situation. Why the concern with headspace?
    CWT likes this.
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  9. #8
    Tenderfoot
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    Tried everything else to stop misfires and nothing helped. Took it to a so so Smith &he tried everything but gauges.

  10. #9
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    Front firing pin broken? You're really not giving us much info to work with. Did you disassemble the bolt? Maybe an explanation and some pictures.
    Ojaileveraction, CWT and Boobarzo like this.
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  11. #10
    Deadeye
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    30-30 headspaces off the rim.
    that's a picture of the rear of the two piece firing pin. It will move when the lever is open.
    I'd Like to see the front of the bolt and firing pin.
    Maybe seating primers to deep?
    Tim​

    "There Are More Things in Heaven and Earth,
    Than Are Dreamt Of In Your Philosophy."

    Power to the proper people at 600 yards


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