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Marlin 3030 jamming on last round

Discussion in 'Lever Guns and other cowboy rifles' started by Sigequinox220, Feb 16, 2020.

  1. Sigequinox220

    Sigequinox220 Well-Known Member Benefactor

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    My Marlin lever action in 3030 jams about 85% of the time upon [attempting] to chamber the last round. Any ideas what could be the cause, or even a diagnostic process to determine the cause?

    If I muscle the lever it doesn't seem to happen. I think that's why im just noticing it this year, as it is the first year I have hunted with it. When target shooting, im typically ripping that lever, but when unloading the magazine on hike back to car im more casually manipulating the action. That being said, I do NOT believe the amount of force is the issue, only exacerbating it and ultimately what led to my noticing the issue. TO unjam it, I need to wedge screwdriver in there and essentially force it into the action. its very odd.


    let me know if anything is needed. pics or whatever. should be fairly easy to induce if necessary.


    thanks all.
     
  2. ronn47

    ronn47 Where's the Scotch? Charter Member Benefactor Life Member

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    Have you taken the mag tube off and cleaned it and the feed area where it fits into.
    Use a gun cleaning spray then lube the mag spring lightly.
     
  3. Schattenreiter

    Schattenreiter Member

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    Magazine spring not strong enuff to push the last round into proper position.
     
  4. Average Joe

    Average Joe Just A Everyday Joe Life Member Supporting Member

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    This is my first impression as well.


    Sent from my iPhone using Tapatalk
     
  5. Sigequinox220

    Sigequinox220 Well-Known Member Benefactor

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    The rifle was inherited from my father. I think it’s probably ~1970s manufacture.

    so the mag spring makes sense! I will order a new one and see if that helps the issue.
     
    teamglock2002 and Average Joe like this.
  6. Sneakymedic

    Sneakymedic Super Moderator Staff Member Benefactor Charter Life Member

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    @Tailhunter @MacEntyre these two may can give you some troubleshooting ideas. Warning: They will try to seperate you from the firearm with the monies. :)
     
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  7. Tailhunter

    Tailhunter I am a Trapper Charter Member Supporting Member

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    There are a few things that can cause jams of this sort.

    First thing I would do is take the gun apart (initially) around the magazine. Clean out the tube and lightly lube the inside. Take the spring and follower and clean and lube. If the spring is weak, replace. Check the follower for nicks or burrs and smooth.
    If both spring and follower have bad issues, replace them both.
    Put it back together and it should take care of your problem.
     
    Last edited: Feb 25, 2020
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  8. Tailhunter

    Tailhunter I am a Trapper Charter Member Supporting Member

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    ps .. they have after market followers that are better than the original, especially if you use polymer tipped ammo.
     
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  9. BatteryOaksBilly

    BatteryOaksBilly A SHOOTER Benefactor Life Member Supporting Member

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    Since nobody has said it yet....somebody always does about jams...Are you Limp Wristing it?
     
  10. chiefjason

    chiefjason Vendor and Leather Hack Vendor

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    I’ve never met a lever gun that responded well to being easy with it. I’ve found you need to hammer the lever or torque it. Hard and fast, or harder if slow.


    Sent from my iPhone using Tapatalk
     
  11. BatteryOaksBilly

    BatteryOaksBilly A SHOOTER Benefactor Life Member Supporting Member

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    I see what I mean:):D
     
  12. chiefjason

    chiefjason Vendor and Leather Hack Vendor

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    Just trying to help.

    But seriously. Clean it well. And don’t baby it. Last range trip a buddy was trying to baby his 45-70 guide gun. It wasn’t going into battery.


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  13. Schattenreiter

    Schattenreiter Member

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    How the hell do you baby a 45-70? That's sorta like burping an elephant.
     
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  14. chiefjason

    chiefjason Vendor and Leather Hack Vendor

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    Yeah, kinda. But he was trying to put the gun into battery easy and it was not going completely into battery. You either have to rack hard and fast, or slow and harder to get that action closed up and do what it needs to. The gun will click but it's not the one you need to get it into battery. And nothing will work with it not in battery. I went over twice and had to grip the ring hard to get it to snap fully into battery.

    Either that or do all the work these SASS folks do to smooth up those actions.
     
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  15. Tailhunter

    Tailhunter I am a Trapper Charter Member Supporting Member

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    Well that rough stuff my work with winchesters but slamming a marlin forward and back will leave you with a jam that’ll take 3 screw drivers to fix. :p
     
  16. MacEntyre

    MacEntyre Shoot on Sight! Charter Member Supporting Member

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    Weak mag spring, dirty mag, old follower... if it's always the last round in the mag, then it is a magazine problem.

    The spring should be significantly longer than the mag tube when you remove it. If it's only 10% to 20% longer, replace it.

    Billy, how do you limp wrist a rifle? :rolleyes:
    But how 'bout this'n: Has it been left loaded with a full mag for a long time, thus wearin' out the spring? ;)
     
    Last edited: Feb 25, 2020
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  17. MacEntyre

    MacEntyre Shoot on Sight! Charter Member Supporting Member

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    If'n I had a levergun that didn't work as well slow, as it did fast, I'd sell it.

    'course, tha's why I have so many Marlins, an' so few Winchesters. :D
     
  18. MacEntyre

    MacEntyre Shoot on Sight! Charter Member Supporting Member

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    @Sigequinox220 are you usin' Hornaday FTX ammo?

    If so, look it up and change the follower. Might as well give it a good cleanin', while yer at it.
     
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  19. Tailhunter

    Tailhunter I am a Trapper Charter Member Supporting Member

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    @MacEntyre

    Do you just read what I write and repeat it or what.


    :p:p:p:p:p:p:p:p:p
     
  20. MacEntyre

    MacEntyre Shoot on Sight! Charter Member Supporting Member

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    Do I just read what you write and repeat it? Or what are you saying?
     
    Last edited: Feb 27, 2020
  21. Tailhunter

    Tailhunter I am a Trapper Charter Member Supporting Member

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