mosin help

Discussion in 'General Rifle Discussion' started by gunnovice09, Mar 17, 2012.

  1. gunnovice09

    gunnovice09 New Member

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    I got a mosin and have only got to shoot it a couple times cuz everytime I shoot it on the first round the casing gets stuck in the chamber and the bolt wont pull back. I have to tap the bold with a plastic mallet. After examining the casing ull see scrape marks on it like there is a bur in the chamber. Any ideas on what it is or how to fix? Thanks guys
     
  2. Swashpl8

    Swashpl8 New Member

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    i had the same issue , as well as many other people.... there are numerous good write ups on the web out there just google....what seemed to work for me was getting a 12 gauge bore brush and cleaning out the chamber very well.
     

  3. canebrake

    canebrake New Member

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    Is the barrel clean? Good rifling?

    Does the round chamber easy?

    Can you eject an unspent round? Does it have the scratches?

    Have you tried different (age/country of origin) surplus ammo?

    Have a smith look at it.
     
  4. gunnovice09

    gunnovice09 New Member

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    Its clean and the casings have scrapes on them.
     
  5. vincent

    vincent New Member

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    Here's a pretty cool site, may lead you to a good answer...

    http://7.62x54r.net/

    The cosmoline can gum up everything if you don't clean it well and "sticky bolt syndrome" is a Mosin mainstay. What kind of ammo are you using? Some of the coated stuff can cause problems but the brass cased mil-surp stuff seems to be relatively harmless...'cepn fer the corrsiveness...
     
  6. gunnovice09

    gunnovice09 New Member

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    In all honesty Vince I'm not sure Cu's its just so surplus ammo I picked up at dunhams. I haven't shot it in about 6 months cuz I'm in the military so it isn't with me:(
     
  7. JonM

    JonM Moderator

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    if you get a sticky case put the bolt in the open position and drop the cleaning rod down the bore while applying pressure opening the bolt. dont beat the handle to open you can break the extractor easily doing that.

    mosins do not have chrome lined chambers and post war 7.62x54r surplus is designed to be used in chrome lined chambers. heating the chamber and letting the lacquered steel cases sit in the chamber will coat the chamber in lacquer residue.

    to clean a suspected chamber of the lacquer residue use 20ga mop and denatured alcohol. swab the chamber then use patches to wipe the residue out. conversly you can use denatured alcohol to clean unfired steel rounds your going to shoot immediately. the purpose of the lacquer is to prevent rust. copper washed steel cases are not lacquered coated but have a thin copper layer to prevent rust instead of lacquer

    if it still sticks you prolly have a chamber burr but try cleaning it first.

    last resort if it is still sticking your going to need to remove the burr. however this can cause a dangerous situation if you start willy nilly removing chamber material. too much metal gone means gasses blowback around the case and the bolt and into your face. the easy way is take 20ga bronze brush an old cleaning rod section and chuck it into a variable speed drill and spin it at slow speed for a bit. clean the chamber out and try shooting again. repeat until burr is gone.

    that may take some time.

    warning
    getting denatured alcohol on a mosin stock will instantly remove the lacquer finish. it will bubble it up into a sticky gummy substance do NOT get it on your stock unless you intend to refinish it
     
    Last edited: Mar 17, 2012
  8. canebrake

    canebrake New Member

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    Bet it's a burr.
     
  9. gunnovice09

    gunnovice09 New Member

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    Thanks for the tips guys! Ill def have to try the suggestions next time I'm home
     
  10. robertusa123

    robertusa123 New Member

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    when i cleaned the reciver i attached the cleaning rod to a drill luckey replacment brushes are cheep i also diped the brush in salvent then by dips in oil more or less polished the reciver bolts smooth as silk know i still get groves scrached in caseing but thats from the magizein springs and guides
     
  11. Old_Crow

    Old_Crow New Member

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    The groove the extractor slips into can be gummed up. I would spray it down with WD40 and let it soak overnight to remove any goop. The wrap some fine steel wool around a wood dowel, cleaning rod or anything you can find to fit in a drill. Then polish the cylinder with the drill. The polishing process should clean the extractor groove.