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870remington Express magnum cross post

Discussion in 'Shotguns' started by kBob, Feb 22, 2021.

  1. kBob

    kBob Member

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    Well I already went to Gunsmithing but thought I might get more traffic here and maybe someone has seen this so he goes the copy function...

    So a bud asked me to look at a Remington 870 Express magnum he had issues with six years ago and tossed in a closet after trying to fix it himself.

    It was "broke"

    yep he tried to put it together via Brute Force and Ignorance and the bolt was locked back and not really connected to the carrier or slide rails.

    Eventually I got it down to basic tear down and pulled the bolt aside to look at.

    There was no extractor. The extractor plunger seems to have compressed the spring and then rusted or otherwise stuck in the depressed position.

    I have a new spring, pin , and plunger, but not being able to get the old spring and plunger to budge they are useless.

    Currently I have reassembled the gun with the missing extractor and had sprayed ballistoil around the stuck plunger and let it sit so the Ballistoil flows down hill. On occassion I work the action vigerously in the hopes that inertia my help loosen the plunger and spring.

    I have considered heating the part a bit in case it is some sort of ancient enamel build up from some petroleum lube but fear ruining temper on the bolt.

    Any advice would be welcome

    Yes the whole gun was dry as a bone in the Gobi when I got it....that is why I had the Ballistoil out in the first place.

    -kBob
     
  2. Stevel

    Stevel Member

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    Tapping with a plastic hammer?

    Then heat.

    Or alternating.
     
  3. Virginian

    Virginian Member

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    Drill it out from the front. Usually the bit will hang and spin the plunger and that should get it out.
     
    Riomouse911 likes this.
  4. kBob

    kBob Member

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    THANKS TO EVERYONE!!!

    If I get it loose I will post what was done.

    -kBob
     
  5. dfariswheel

    dfariswheel Member

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    Forget the Ballistol, get some Kroil. It's by far the best penetrating fluid.
    Stand the bolt upright and put a good drop in the hole. As it runs in over a hour or so, add more.
    Give the side of the bolt around the plunger hole a few sharp raps with a plastic screwdriver handle or a small brass hammer. The vibration will help the Kroil to soak in.

    Let stand 24 hours.
    Turn the bolt upside down and give it sharp raps with the handle or hammer to see if it'll slide out.
    Also, hold the bolt upside down and give the head sharp raps on a hard wood or Formica table top to try to move things by inertia.

    Last resort is drilling.
     
  6. gralewaj

    gralewaj Member

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    Location:
    Trenton, MI
    Any luck getting this extractor and plunger removed from the bolt?
     
  7. Virginian

    Virginian Member

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    "Last resort is drilling."

    Why? Use a bit the same size as the hole and you will not damage the bolt if you are careful. That's how they machined it to install it.
     
  8. mnrivrat

    mnrivrat Member

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    I agree drill is last resort . I also agree Kroil is a better product to use. I wonder if the owner put the plunger into the hole without installing the spring ? If so it makes this job much harder as usually the spring tension would push the plunger out unless it is very tight. Also if the plunger seems to be below the entry in the hole it would indicate the spring is not there. I would consider setting the bolt on its face and tapping on the back of the bolt with a plastic mallet. You can give it a pretty strong rap with the mallet without hurting anything.
     
  9. kBob

    kBob Member

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    So this AM I decide to go out and get ATF and Acetone and decided to move the shotgun from the bedroom to the shop so as to not stink up the bedroom.

    Low, there is the plunger fully forward!

    The Ballistoil DID work...it just took 10 days.

    Well shoot the plunger is out so change plans about early morning grocery visit and shoot this will take what three minutes?

    Well no, it took longer than that to get the spring out. Once out the amount of crud on it made me want to clean out that hole finally felt good about everything and decided to use the new spring and plunger to install the new extrctor. Just pops right in!

    Unless the greasy finger loose control and the extractor goes to work for Elon Musk and tried going orbital....and landing somewhere on a carbet just the wrong color. Spent more time searching for part than actually anything else this morning.

    Once found, THEN it just snapped right in.

    Cycled a bunch of trap loads thought it out in the yard and it seems hunky dorey.

    Thanks for the help and I still plan to make up a jar of magic rust buster for next time.

    -kBob
     
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  10. mnrivrat

    mnrivrat Member

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    All's well that ends well. Glad the threat of getting wacked on it's back side scared it out of it's rabbit hole . LOL
     
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