MN 91/30 bolt jamming

[dieselman]

occasionally, after firing a round, i have a large degree of difficulty getting the bolt to open the chamber to eject the casing, it just sticks in the closed position. any idea what could be causing this?

 

[Lanser]

No, but I'd like to find out, because our Mosin does the same thing -- the bolt sticks tight after every shot.

So, yes.... does anyone know how to fix this???

 

[Lucas156]

I have had a similar problem with my m44 After I fire a round the bolt is pretty hard to pull down. Dont know what causes it though.

 

[techres]

Some of the lacquered ammo contributes to this problem as it builds up with each shot fired, but there is hope:

Collecting and Shooting the Military Surplus Rifle (2006) - Surplusrifle.com

Just go slow and be careful. On the other hand, if you are going to damage a rifle - a $100 mosin is the one to bubba.

 

[88E30M50]

Sticky Bolt Syndrome. While Ely Lily has not come out with a designer drug to fix this yet, there is still the old fix of cleaning and de-burring the bore. Here's a good writeup on how to do it: Collecting and Shooting the Military Surplus Rifle (2006) - Surplusrifle.com.

 

[sloughfoot]

Probably a combination of lacquered ammo, rough chamber, and maybe rough bolt face and extractor. (The last not too likely) The rough chamber is easily fixed though.

Mil-Surp ammo for this caliber is sometimes VERY hot. Not like the Russkies really cared about consistant ammo when beating back Hitler's Legions after all. Just had to go Boom....

If you have access to a chronograph, you will be amazed at the velocity differences from round to round.

Have fun. At least you won't get hurt shooting the rifle and ammo.....

 

[Sgt.Schlitz]

Sticky Bolt Syndrome. While Ely Lily has not come out with a designer drug to fix this yet, there is still the old fix of cleaning and de-burring the bore. Here's a good writeup on how to do it: Collecting and Shooting the Military Surplus Rifle (2006) - Surplusrifle.com.

I used this method on my M44 and it worked like a charm. I still have to do it again from time to time.

 

[outlaw2842]

just make sure you throughly clean the chamber.ive also encountered this on a few of my 91/30's.i just cleaned the hell outta it and it works like a champ now.

 

[jblomenberg16]

Couldn't agree more....clean the chamber! You won't believe the difference!

Also, if you can, shoot the polymer coated or better yet brass or copper washed rounds rather than the lacquered, so you can reduce build up in the future.

 

[AFA1CY]

Sticky Bolt Syndrome. While Ely LILLY has not come out with a designer drug to fix this yet, there is still the old fix of cleaning and de-burring the bore. Here's a good writeup on how to do it: Collecting and Shooting the Military Surplus Rifle (2006) - Surplusrifle.com.

Fixed it for you