Mosin Nagant M91/30 problem.

[stchman]

Hello all.

I recently purchased a Mosin Nagant M91/30 off J&G Sales.

It is in really nice shape for a 1926 rifle. Problem is I have the sticky bolt syndrome.

When I get the shell to eject (beat on bolt with my hand) there are pretty big scratches on the casing. That has to be some type of burrs.

I was reading that taking a rounded file and lightly running it over the edge of the chamber will cure this.

I just would like some advice from others that have had sticky bolts.

Thanks.

 

[chuwee81]

try 7.61x54r.net and surplus-rifles.com. I believe they have a few artocles on this issue

 

[offthepaper]

Put away the file!

I have about a dozen Mosins. Almost all the Russians had the sticky bolt when I first tried to shoot them.

here's the drill.....
remove the action with barrel from the stock. Flush the chamber repeatedly with VERY hot water, use a lighth and closely check the chamber for any cosmo residue (there's like some there even if you don't see it), then ake a 12 ga cleaning brush and attach it to a short length of a cleaning rod. insert the rod w/brush into a variable speed drill. dip the brush into a pan of mineral spirits and insert into the chamber with the drill speed on slooow. repeat this process until you are confident that ALL cosmo has been removed. the action should work buttery smooth now. clean and re-oil the rifle as normal. test fire. be aware that shooting lacquered ammo can bring back the sticky bolt, if this happens, break out the mineral spirits and repeat process. brass cased ammo works best in mine as far as the sticky bolt goes.

good luck and let's see some pics and range report.

 

[stchman]

The spent casings have gouges after I finally get them out which leads me to believe that burrs exist. I will check the chamber out and let everyone know.

 

[tju1973]

My Type 53s (one of them) had the same thing-- it looked like there was a piece of missing chamber-- but I boiled water in a deep stew pot and dunked the chamber-- after a few min, some simple green and a dental pick, I pred a big chunk of cosmoline out-- it has been fine ever since.
Just becasue it looks clean, it probably aint. I have an M44 from GM -- it still bleeds Cosmo to this day---

 

[mbt2001]

Get some fine grit cloth and run it approx where the gouges are. It sounds like a burr to me. I doubt a file can do the work properly. Jewlers polishing tools would work as well. Most files are not fine enough to remove a burr in that area.

Using a 12 ga brush with drill is an interesting idea...

 

[offthepaper]

Using a 12 ga brush with drill is an interesting idea...

just keep dipping the brush in mineral spirits and slow "drill" the chamber. About 10 "dip and spins" should do it, but be nit picky. That cosmo can find the smallest places in the world to hide. Until you remove All from the chamber/bolt/barrel there will be small issues. best to get it out now and enjoy the power of mosin.

 

[ohgrady]

oil drops on my glasses

I've shot the Mosin I bought this spring twice. Both times I've noticed a few drops of oil on my glasses afterward. Any thoughts? The gun shoots fine-I'm getting used to the feeling of being punched in the arm every time I fire it. Even though I've only put about 40 rounds threw it, I want another one

 

[rocinante]

I just got a 91/30 and had the same experience. I will apply some of these tips. thank you.

 

[NC-Mike]

I've shot the Mosin I bought this spring twice. Both times I've noticed a few drops of oil on my glasses afterward. Any thoughts? The gun shoots fine-I'm getting used to the feeling of being punched in the arm every time I fire it. Even though I've only put about 40 rounds threw it, I want another one

Just abandon your manhood get a wussy pad.


I have two!

 

[Im283]

Both times I've noticed a few drops of oil on my glasses afterward

too much oil on the bolt?

 

[Franco2shoot]

91/30 test

What happens if you load a round and then, without firing, attempt to eject.
My guess is that is cycles smoothly. If not then there may be a burr, but most likely, on firing the gases combine with miniscule amounts of Cosmoline and form a type of glue.

On my 91/30 I used the 12 gauge brush dipped in GASOLINE.. you will know of Cosmoline presence when you see yellow stains on the brush.

KKKKFL

 

[stchman]

What is happening to ejected casings is the same that is happening in this article.

http://surplusrifle.com/articles2008/mosinburr/index.asp

Looks like I will be doing some chamber polishing.