+ Reply to Thread
Results 1 to 3 of 3

Thread: Flawed Mosin 91/30

Click here to increase the font size Click here to reduce the font size
  1. #1
    FREE MEMBER
    NO Posting or PM's Allowed
    sbucy's Avatar
    Join Date
    Apr 2010
    Last On
    05-10-2010 @ 06:54 AM
    Posts
    10
    Local Date
    03-28-2024
    Local Time
    02:40 PM

    Flawed Mosin 91/30

    Hey Folks - first post

    I recently bought a 1943 Mosin-Nagant (Iz) that has an odd (to me anyway) problem.

    As best I can tell, the breech has a shallow quarter-inch wide void in the metal casting about a half-inch inside the chamber. It's about an eighth of an inch deep.

    The round goes in smoothly, but once it is fired the case expands into the void, jamming the round from being extracted. At first it was so bad that I had to kick the bolt up and stomp down on it with my foot to eject the round. Once I figured out what was happening, I tried to smooth the area inside the chamber and I improved the behavior some. It is now possible (but uncomfortable) to eject the round normally with your hand on the bolt.

    If there was a way I could fill this void so that the shell casing was not pressed into it, I would solve the problem. The gun shoots fine, otherwise.

    I don’t have the facilities to try to spot weld a tiny patch within the chamber, then re-mill it cylindrical. It’s also not cost effective to pay a gun smith to do that, either. I’m stuck with patching it somehow myself, or just hanging the rifle on the wall as a decoration. Not to worry, I have another Mosin (’37 Tula) which is perfect.

    Any ideas? Liquid metal, epoxy, silver solder? Followed by honing the cylinder (flap-sanding with a long shaft). It doesn’t need strength (except for compression) but must “stick” to the steel inside the shell bore.

    I say I can’t weld it, but I might be able to jury-rig some means of arc welding a spot in there. Maybe with a brazing rod and a car battery? What do you think?

    I think this flaw has been in the rifle since it was made - looks to me like a void in the original steel blank. Don't think it's corrosion or damage from a faulty casing. Have any of you ever run into a problem like this? It is common for wartime Mosins? I know towards the end, the Reds were suffering materials problems and were cutting quality control to keep the arms flowing.

    Just curious if anybody has run into this before.

    sbucy
    '37 Mosin-Nagant
    '43 Mosin-Nagant
    '48 Lee-Enfield
    ?? Chinese SKS
    1870/87/15 Vetterli-Vitali, 6.5mm Carcano
    Information
    Warning: This is a relatively older thread
    This discussion is older than 360 days. Some information contained in it may no longer be current.

  2. # ADS
    Friends and Sponsors
    Join Date
    October 2006
    Posts
    All Threads
    A Collector's View - The SMLE Short Magazine Lee Enfield 1903-1989. It is 300 8.5x11 inch pages with 1,000+ photo’s, most in color, and each book is serial-numbered.  Covering the SMLE from 1903 to the end of production in India in 1989 it looks at how each model differs and manufacturer differences from a collecting point of view along with the major accessories that could be attached to the rifle. For the record this is not a moneymaker, I hope just to break even, eventually, at $80/book plus shipping.  In the USA shipping is $5.00 for media mail.  I will accept PayPal, Zelle, MO and good old checks (and cash if you want to stop by for a tour!).  CLICK BANNER to send me a PM for International pricing and shipping. Manufacturer of various vintage rifle scopes for the 1903 such as our M73G4 (reproduction of the Weaver 330C) and Malcolm 8X Gen II (Unertl reproduction). Several of our scopes are used in the CMP Vintage Sniper competition on top of 1903 rifles. Brian Dick ... BDL Ltd. - Specializing in British and Commonwealth weapons Specializing in premium ammunition and reloading components. Your source for the finest in High Power Competition Gear. Here at T-bones Shipwrighting we specialise in vintage service rifle: re-barrelling, bedding, repairs, modifications and accurizing. We also provide importation services for firearms, parts and weapons, for both private or commercial businesses.
     

  3. #2
    Contributing Member Aragorn243's Avatar
    Join Date
    Apr 2009
    Last On
    Today @ 08:31 AM
    Location
    Pennsylvania, United States
    Posts
    6,974
    Real Name
    Steve
    Local Date
    03-28-2024
    Local Time
    02:40 PM
    Could be an ex-sniper rifle that they didn't fill the screw holes properly creating the void.

    Are you having trouble with both steel and brass cased rounds? If only brass, using steel cases might be a temporary solution.

  4. Avoid Ads - Become a Contributing Member - Click HERE
  5. #3
    FREE MEMBER
    NO Posting or PM's Allowed
    sbucy's Avatar
    Join Date
    Apr 2010
    Last On
    05-10-2010 @ 06:54 AM
    Posts
    10
    Local Date
    03-28-2024
    Local Time
    02:40 PM
    Thread Starter
    Yup - problem with both. In fact, the thin steel cases are worse, I think. I got some relief by flap sanding/polishing the entrance of the breech down to the defect. That definitely helped. I could try to take off another thousandth I suppose. But it's really hard to get tat it - have to make a flap sander from a long dowel and work the hand drill in from the rear after taking out the bolt.

+ Reply to Thread

Similar Threads

  1. M91/30 Mosin Nagant At Big Five
    By stonewall56 in forum Soviet Bloc Rifles
    Replies: 4
    Last Post: 11-04-2009, 08:28 AM
  2. Flawed stock cartouche information
    By trfindley in forum M1 Garand/M14/M1A Rifles
    Replies: 1
    Last Post: 04-24-2009, 01:01 PM
  3. Mosin 38
    By big bear in forum Milsurps General Discussion Forum
    Replies: 4
    Last Post: 03-23-2008, 12:29 PM
  4. About to get my first Mosin.
    By Calum in forum Milsurps General Discussion Forum
    Replies: 11
    Last Post: 07-20-2007, 09:42 AM
  5. need help to ID Mosin
    By smokin smokey in forum Milsurps General Discussion Forum
    Replies: 4
    Last Post: 03-15-2007, 09:44 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Raven Rocks