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  1. #1
    Member bulletslap's Avatar
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    Questions about Allin Second Conversion

    I have acquired an Allin 1866 Second Conversion.

    I am somewhat familiar with firearms, but new to Trapdoors.

    I have found a few issues with this old piece and need some advice.



    First is the wear pattern on the “locking bolt” as you can see in the photos the contact is not even. Is this something I should be concerned about ?

    Next is the locking latch has an 1/8 inch gap between the retaining screw and the body of the bolt, I think I may be missing a piece ? If so what should I be looking for.

    Lastly a horse type spring that fits into the left side of the receiver is broken. This has something to do with the ejection of the shell I believe. Is it called a friction spring ?

    https://www.amazon.com/photos/groups/share/06Ia3TTvT02hrWkr7cnmtw.kogIMtWqITYtAZZ3LsWdC8

    I know this is a lot of questions and I sincerely appreciate any advice y’all can give me.
    Last edited by bulletslap; 03-24-2021 at 12:54 PM.

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  3. #2
    Member bulletslap's Avatar
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    I need to read and follow the instructions on uploading photos.

    When I can access a desktop I will give it another try.

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    Advisory Panel browningautorifle's Avatar
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    Quote Originally Posted by bulletslap View Post
    I need to read and follow the instructions on uploading photos.
    Here, let me...
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    Regards, Jim

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    Member bulletslap's Avatar
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    Quote Originally Posted by browningautorifleicon View Post
    Here, let me...
    Thank you !

    My browser is having some problems.

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    Really Senior Member butlersrangers's Avatar
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    'bulletslap - An original 'horseshoe' shaped 'extractor/ejector spring' can be purchased from Movieman630 on ebay for $20.

    A 'prong' on this spring catches the edge of the .50-70 cartridge case as it is chambered.

    A flat spring on the bottom of the receiver locks on the rear of the cartridge rim, holding the cartridge in the chamber.

    When the breech block is opened, a ridge on the breech-block begins extraction of the cartridge case from the chamber.

    Once the cartridge rim is forced over the bottom flat-spring, the horseshoe spring ejects the case rearward.

    The case is propelled into an 'angled' stud at the bottom of the action's trough. The brisk collision deflects the fired case up & out of the action.

    Something is out of whack with your Breech-Block latch mechanism: wrong part or missing retaining-plate?
    Parts are pictured and available at:

    Parts

    Movieman630 - 'horseshoe' spring picture attached:


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    Member bulletslap's Avatar
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    Thank you !

    The photos at the site you linked to are very helpful, I believe have a cam assembly from a different model on my breech block.

    These photos also help me with nomenclature of the parts as I am not familiar with Trapdoor Rifles.

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