Mosin-Nagant Cosmoline Cleaning

Mosin-Nagant Cosmoline Cleaning

This is a discussion on Mosin-Nagant Cosmoline Cleaning within the Defensive Rifles & Shotgun Discussion forums, part of the Related Topics category; Hey everybody! I got a new rifle! Just picked up a new Mosin today. The receiver is stamped with 1939, and if it was ever ...

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Thread: Mosin-Nagant Cosmoline Cleaning

  1. #1
    VIP Member Array pittypat21's Avatar
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    Mosin-Nagant Cosmoline Cleaning

    Hey everybody! I got a new rifle!

    Just picked up a new Mosin today. The receiver is stamped with 1939, and if it was ever used at all, I'd be a little surprised. This thing is in spectacular condition. Gotta love a surplus rifle. Am I right?

    But uhHow the heck do I get this crap off my rifle?

    I've got the stocked cleaned just fine. I have the whole rifle broken down, and I've wiped everything off with paper towels, just to get the majority of the cosmoline off. I sprayed the metal parts down with WD40 and let 'em soak for a moment, and then wiped 'em down again. But it didn't do a whole lot of good, this thing is still pretty greasy.

    Those of you with some good experience in this, how do I get it cleared out?
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    I've always used paint thinner to get cosmoline off metal parts, worked for me.
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    Senior Member Array patri0t's Avatar
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    warm up the parts, then dose 'em with baking soda.

    Congrats on new shooter!!
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    VIP Member Array pittypat21's Avatar
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    So, after the bath of wd40, I tried using a coarse towel to wipe it down. Seems to be working. Best as I can tell anyway.

    Sent using tapatalk. Sorry if there're any mistakes.
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    Senior Member Array Saint77's Avatar
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    I can assure you, when you think you got the cosmo off it, there's more to be had, lol. My first was packed with lots of it, when I got done cleaning it, and fired it at a range, more seeped out from the heat of firing.

    Put that stock out in the sunlight, and when the wood heats up, see if more cosmo seeps out.
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    Cleaning the metal is actually the easy part. The cosmolene-soaked stock will bleed gunk for a while.

    For cleaning the metal, any of the methods offered will work. The key is to strip the gun down and separate the barreled action from the stock, then strip the action. It's a very basic weapon, and taking it apart will give you some familiarity with it. You'll also get an idea of how to improve the trigger.
    bmcgilvray and pgrass101 like this.
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    While it isn't advisable, I've found that gasoline is the very most effective way to remove cosmoline. Being lazy and impatient, I'd probably get out on the driveway with the lawnmower gas can and get with it, cleaning up a cosmoline-swathed acquisition.

    If anyone employes this method, any health, environmental, or fire hazard issues are on your own head.
    ppkheat likes this.
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    Distinguished Member Array GlassWolf's Avatar
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    soak everything in a bath of mineral spirits.
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    CMP uses a dishwasher for the stocks!

    I have used acetone to remove oil from the stock head of shotguns and to remove cosmoline. Be sure to do it outside and away from flames.
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    Quote Originally Posted by Chorizo View Post
    CMP uses a dishwasher for the stocks!

    I have used acetone to remove oil from the stock head of shotguns and to remove cosmoline. Be sure to do it outside and away from flames.
    The problem is that the M-N stock is so dang long you probably can't fit it in the DW. SKS stock, no problem!
    Smitty
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    VIP Member Array pittypat21's Avatar
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    All cleaned up! Or so I hope!

    Sent using tapatalk. Sorry if there're any mistakes.
    Attached Images
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    VIP Member Array StormRhydr's Avatar
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    You know, my father brought some old russian rifle home from Viet Nam. I remember working for days to clean that thing up. We never fired it, and had forgotten all about it till this thread.

    I still have it, though its been long forgotten. I think its about time to dig it out, and figure out what it is.
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  13. #13
    VIP Member Array pittypat21's Avatar
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    Anybody have problems getting a bayonet on theirs? The fit so tight with mine that it took a little encouragement with a hammer to get it half on then off again.

    Sent using tapatalk. Sorry if there're any mistakes.
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    VIP Member Array pittypat21's Avatar
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    Quote Originally Posted by StormRhydr View Post
    You know, my father brought some old russian rifle home from Viet Nam. I remember working for days to clean that thing up. We never fired it, and had forgotten all about it till this thread.

    I still have it, though its been long forgotten. I think its about time to dig it out, and figure out what it is.
    I agree! Get that thing out man!

    Sent using tapatalk. Sorry if there're any mistakes.
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    VIP Member Array StormRhydr's Avatar
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    I want to say that it looks like the one in your picture, but its been a while since I looked at it. I have to dig it out of storage. But, I have a feeling its going to be an interesting discovery.

    Honestly, I have no clue how to figure out what it is. I mean I think I could figure out the caliber, but the markings, if in russian, well it beats me.

    Quote Originally Posted by pittypat21 View Post
    I agree! Get that thing out man!

    Sent using tapatalk. Sorry if there're any mistakes.

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