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Mossberg 935 Magnum Autoloader Troubleshooting...

Discussion in 'Mossberg 935 Magnum Autoloader' started by DHonovich, Sep 3, 2010.

  1. DHonovich

    DHonovich Founder Staff Member Administrator Sponsor "Philanthropist"

    Any issues, concerns or problems you may have with your mossberg 935 magnum autoloader; this is a thread for troubleshooting.
  2. verytricky

    verytricky Copper BB

    I have a 935 magnum, which I use to shoot foxes.

    I have had the 'operating handle' or cocking leaver fall out several times whilst shooting, and twice I have not found them in the bush. ( shooting at night )

    The first time it was replaced by the gunsmith. This time the dealer in the UK does not have stock. Waiting 8 weeks for a replacement. This means the gun can not be used!

    I am shooting 50g BB shot.

    Any advice and help, both on getting it fixed, and on getting the part sent to the UK!!
  3. SHOOTER13

    SHOOTER13 Guest

    Welcome to the Mossberg Owners Forum verytricky !!

    When you find the time, please stop by the New Members Welcome Area and introduce yourself to our community !! ;)
  4. Sn3aKyGuY

    Sn3aKyGuY .30-06

    Can't help you to much as far as getting your hands on one, but when you do the part I'd pick up some Loctite Threadlocker Blue 242.

    Loctite® Threadlocker Blue 242® is designed for the locking and sealing of threaded fasteners which require normal disassembly with standard hand tools. The product cures when confined in the absence of air between close fitting metal surfaces. It protects threads from rust and corrosion and prevents loosening from shock and vibration. Loctite® Threadlocker Blue 242® is particularly suited for applications on less active substrates such as stainless steel and plated surfaces, where disassembly is required for servicing.
  5. Sn3aKyGuY

    Sn3aKyGuY .30-06

    Here are 3 of Mossberg's International Dealers for you to contact:

    united kingdom
    deben group
    441 3943 87 762
    FX: 441 3943 80 373

    united kingdom
    york guns
    ph: 44 1904 487190
    FX: 44 1904 487 195

    united kingdom
    the saddlery and gun room
    ph: 44 195 957 3089
    FX: 44 195b 957 5590
    EM: hushpower@ic24.net
    Disposablehero likes this.
  6. raven01750

    raven01750 .270 WIN

    Was there ever a solution to this one? The operating handle just pushes in to the Bolt and Slide Assembly. There are no screws etc., just tension holding it in place. My guess is the plunger assembly (part of the slide assembly) wasn't fully engaging. Probably needed to be disassembled and cleaned/inspected. But I was just curious if an exact issue was identified. Thanks.

  7. Bowtech11

    Bowtech11 Copper BB

    I have a Mossberg 935 that has been out of service since the middle of December. The return spring tube in the stock broke at the threads going into the receiver and I cannot find a parts source. I have emailed Mossbergs customer service twice in the last 6 weeks without a reply even though I included my name, home phone number, cell phone number, and email address. I have been a loyal mossberg customer for years but I will go elsewhere if this is the type of treatment I am going to receive. I cannot just order the parts because the diagram I have does not list a part number for the tube and no one will return my messages so I might get one and order the part. I tiried to attach a pic of the tube and receiver, but it says the file is too big...............can someone please help me
  8. Steven0150

    Steven0150 Copper BB


    my mossberg 935 i just bought 3 weeks ago. when i go to shoot a 3 inch round out of it, the shell ejector will go so far up it gets caught on top of the release button on the inside. and its almost every 3 inch round. and goose season is around the corner. i think i need a new trigger group. can anyone help before i send it in.
  9. DHonovich

    DHonovich Founder Staff Member Administrator Sponsor "Philanthropist"

    Re: problem

    Have you gotten to the bottom of your issue yet?
    Have you tried stripping your 935 down and giving it a thorough inspection and cleaning?
    Does it shoot 3.5" shells okay? Have you tried other brands of 3"?
  10. nghtmre4u

    nghtmre4u Copper BB

    mossberg 935 help needed

    i have the mossberg 935 and i bought it used in febuary but havent been able to shoot it till this weekend geese just came in well 1 shot gun jammed and this is what happened..Can this be fixed or do i need a new barrel? Thanks for your help

    Attached Files:

    • gun.jpg
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  11. MikeD

    MikeD I'm Your Huckleberry Staff Member Global Moderator "Philanthropist"

    Re: mossberg 935 help needed

    That's a pretty big failure I think I would.contact mossberg even though you bought it used just to see what they say. I have never seen a barrel fail like that.

    If that route does not get you anywhere then I would look for a competant gunsmith. I don't know what is involved with repairing that so I cannot venture a guess. It might be an easy repair or it might be toast

    Hopefully someone else can offer more info on this

    Sent from my G19 using Tapatalk 2
  12. kevosurfz

    kevosurfz Copper BB

    Hi could someone assist please.
    I have dismantled the barrell (sorry still learning the correct gun techo speak) on my 935 and removed the gas seal rings to clean insite and also undone the nut on the other side to remove the recoil spring?, in behind this was another seal ring with a chamfer on one side. Should this be there it doesent seem to sit nicely on reassembly and what a job it is getting that spring and nut back on.
    I doesnt show separate parts for this in the owners manual so I guess it should not be removed.
    Attached are some photos to explain, you can see in the first photo that the seal ring is skewed.

    Attached Files:

  13. 9rd935

    9rd935 .22LR

    that spring does look pushed to one side . you mite have to pull it back out and try turning the spring and then tightening the retaining nut back down (hard job to do) and see how it looks then . i pulled mine out once and after over an hour of struggling and lots of *%$#@ <--- thoes kind of words it went back together so , that will be the last time i do that lol . take care when threading the ring back in as it can cross thread easily since it does take alot of preassure to get to the threads .
    hope this helped some ..
  14. SnowMud

    SnowMud Copper BB

    anyone ever break the link before? and whats going on with the forearm retainers? there all breaking. gun is too powerful for itself!
  15. Blood_Trail

    Blood_Trail .270 WIN

    FYI, you're not supposed to remove the gas plug nut. Noticed you can't order one an they don't have it listed in the manual under the parts breakdown. I marred mine up pretty good last night and now I have to send it back to Mossberg to have them fix it.
  16. ufgators68

    ufgators68 Copper BB

    Have any of y'all had the sling stud break free from the magazine cap? Mossberg has already replaced the cap... I am just trying to find out if this is a common problem?

    Other than that issue, it has been a really nice turkey killer. Recoil is manageable and using 3-1/2" Winchester XR #5s, I am getting around 100 pellets in the kill zone at 35 yards.


    25 lbs, 11" beard & 1-1/8" spurs.
    John A. and Rossignol like this.
  17. nitesite

    nitesite Sheepdog Moderator "Philanthropist"

    Damn. Nice hunting. Congrats.
  18. Rossignol

    Rossignol The Original Sheriff Staff Member Global Moderator Moderator Sponsor

    Wow, nice work! I've not heard of a screw breaking off before, but I had a similar issue with a sling swivel being pulled at a 90* angle relative to how it was mounted. I know that's how the cap is designed and one would think its solid. This is in fact the first I've heard of it. Hopefully a fluke and one time deal.
  19. Joe Collins

    Joe Collins .410

    Hello everyone,

    I have read a lot of good information that has been very helpful so far, but I have been having several issues with my 935. I am trying to build it for 3 gun, but it has been so unreliable that I dont know now.

    I recently installed a Nordic Components MXT +6 magazine tube (10 total in the mag). I trimmed the spring to about 12 inches of overhang, but it wouldn't reliably load from the magazine at all with the 10 shells (2 3/4) in the tube. It feeds 8 from the tube just fine (sometimes) and other times it will just dump 2 or even 3 shells right behind each other into the lifter area creating a shell to shell jam in the lifter.

    I read that sanding the shell stop lip helped with loading from the tube, so I sanded and polished it until it was smooth with no sharp corners and it still didn't feed 10+ shells into the shell lifter.

    It seems as if there is too much pressure from the spring on the shell stop and the way the stop is integral with the bolt release button, it doesn't look like it has enough leverage to move the shell stop out of the way of the shell's rim. So I was wondering if there was anything else I could do to possibly get this thing to work the right way before I send it back to Mossberg.

    Thanks for any help guys!
  20. Rossignol

    Rossignol The Original Sheriff Staff Member Global Moderator Moderator Sponsor


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