View Full Version : Mosin Nagant M91/30 problems :(

matt nasty
April 12, 2009, 12:25 AM
I guess its nothing to serious but im having trouble with the bolt getting stuck, its very difficult to nearly impossible to move the action......

Is it the ammo? I was shooting mil surplus copper wash rounds.

Not proper cleaning? I think im doing a good job.

any feed back on this problem would be awesome and much appreciated, thanks.

April 12, 2009, 12:41 AM
Might be the action itself. Make sure the serial numbers on the bolt and the action match. A whole lot of these rifles are mismatched, which can present problems if the two pieces were machined differently.

How to fix it? I dunno :confused:.

April 12, 2009, 12:51 AM
Is it getting stuck with a shell chambered? Or cycling empty? Does it function at all or just rough?

I took a medium and fine abrasive brush Dremel wheel and cleaned/polished entire bolt assembly on all "4" of mine. Made bolt look like new( watch markings) .410 gauge copper brush on a cordless drill into chamber with "Sweets" solvent . Shiny as new and function beautifully.

Hope it works.

B. Lahey
April 12, 2009, 01:05 AM
How do the casings look when you manage to get them out of the chamber? Any splits or obvious deformations?

Many years ago a friend of mine had an ancient milsurp round split and lock up his Mauser. He had to kick the bolt open. That was an ammo problem, the rifle checked out fine.

Have you fired any new-production ammo through it? If other kinds of ammo work, I would just avoid that particular vintage of milsurp. If it's a universal problem, you should probably have it checked out by a gunsmith (or just buy another MN, it could be cheaper than the gunsmith:)).

April 12, 2009, 01:47 AM
Did you attempt to turn the safety while the bolt was not closed?

The lower rail on the bolt must be around the lower lug of the 'safety'. If it is above, below, to the side, or hanging up on the rail; you'll have problems.

April 12, 2009, 02:31 AM
Sounds like sticky bolt syndrome.



April 12, 2009, 02:38 AM
Mosins are known for the sticky bolt problem, it is an easy fix ... see here ---> http://www.surplusrifle.com/shooting2005/eliminatesbs/index.asp


April 12, 2009, 06:09 AM
Is it the ammo? I was shooting mil surplus copper wash rounds.

Sounds like it could be ammo. I had an issue where I had a hell of a time cycling the bolt after firing a round. Switched ammo and the problem did not repeat itself. I've put a lot of rounds down range since then without issue.

April 12, 2009, 06:09 PM
My tula was real sticky like that. Chuck up your cleaning rod in a cordless drill with a bristle full of lacquer thinner, and go in from the action side. It freed mine right up, even with steel cased rounds.

April 12, 2009, 10:35 PM
I agree with the Sticky Bolt diagnosis, and the reference to the Surplus rifle link.

matt nasty
April 12, 2009, 11:41 PM
thanks a lot for the input guys, will see next weekend how it works ;)