Mosin jam

Status
Not open for further replies.

fallout mike

Member
Joined
Jan 26, 2011
Messages
2,059
Location
North Mississippi
My last shot at the range yesterday with my 91/30 jammed. It fired, it was also the last round in the gun but the bolt will not open to eject the spent casing. The bolt will come close to turning all the way up but stops just short. Any ideas how to get it open?
 
Bigger hammer?
Mossy's were made to be beat on.

Sounds like a badly stuck case.
Try tapping with a steel cleaning rod down the barrel as you try to open the bolt.

Once you get it out, clean the snot out of the chamber with an over-size bronze bore brush & solvent.

rc
 
Thanks rc. THat worked like a charm. I very seldom have problems with my stuff bc I baby everything. I didnt know if I would break something by beating on it so I thought I would ask first. Thanks again.
 
Mossys have been beat on by the best & strongest Russian peasants Russia has to offer.

If yours ain't broke yet, you ain't gonna break it getting a stuck case out!! :D

rc
 
Im really wanting to increase my knowledge of firearm repairs. Im thinking I should buy those $10 dvds for each gun I have bc at this point I dont know much. Ive only got 10 guns so its not like it would brwak the bank buying the gun specific dvds.
 
Dr, I have never had a problem with it before. The one I have is absolutly immaculate and the bolt is really smooth. Another problem is that Im recovering from surgery on my right arm so I was able to put much pressure on it with my left jand while trying to hold the gun with my knees.
 
Quick Mosin 91/30 stuck bolt tip.

Buy some Ballistol. Before you load up the rounds, run the rounds across a Ballistol dampened patch to get them moistened with Ballistol. No need to drench them, just get some on the round - the brass (steel) part, not the bullet itself..

When you fire and cycle the bolt, the action will be quite smooth and there won't be a jam.

The Ballistol works to keep the round from sticking to the chamber.

I did this at my last trip to the range and it worked really, really well.
 
Oil is oil. It doesn't have to be one special brand.

But an awful lot of very knowledgeable gun people have cautioned against oiling ammo for almost a century.

It increases case slip and bolt lug thrust considerably.

Perhaps a better fix would be to clean the crap out of the chamber with a short cleaning rod, a brass bore brush wound with 0000 grade steel wool, and an electric drill!

A lot of imported Mossys got thrown in a bluing tank to make them look more presentable by the importers.
That can make the chamber a little more "grippy" then it needs to be.

And an awful lot more of them haven't really had a really good chamber cleaning since WWII!

rc
 
Is this a "new" Mosin? Many clean the crud out of them and do not quite get all the gooey brown nectar of the Gods off the chamber and headspace area.
Hard to see....get a flashlight and a long Q-tip.
 
Im thinking it may have been operator error. Im right handed and my right arm is totally out of order for the time being bc of a fall off a ladder & surgery. Im currently shooting lefty without any use of the right. I may have been working the bolt awkwardly and caused it. The ammo is clean and I only shot one magazine through that one bc of my current condition.
 
Bigger hammer?
Mossy's were made to be beat on.

Sounds like a badly stuck case.
Try tapping with a steel cleaning rod down the barrel as you try to open the bolt.

Once you get it out, clean the snot out of the chamber with an over-size bronze bore brush & solvent.

rc
Funny, this happened to me at the range once. I was shooting some old Russian rounds and the bolt stuck on a spent casing.
I laid the rifle on the ground, right foot on the stock and left heel to "kick" the bolt open. Two guys next to me looked at me like I was nuts. I smiled and said "It's Russian, no problem!" :D
 
Quick Mosin 91/30 stuck bolt tip.

Buy some Ballistol. Before you load up the rounds, run the rounds across a Ballistol dampened patch to get them moistened with Ballistol. No need to drench them, just get some on the round - the brass (steel) part, not the bullet itself..

When you fire and cycle the bolt, the action will be quite smooth and there won't be a jam.

The Ballistol works to keep the round from sticking to the chamber.

I did this at my last trip to the range and it worked really, really well.
I would advise caution. IIRC lubing a cartridge it is true will make it easier to extract, but it can also cause a greater thrust against the bolt face. If your rounds are sticking in the chamber you should find out why. It the rounds sticking are due to high pressure than that should be fixed first. Lubing the round with oil can make it thrust harder against the bolt. The thrust is no longer mediated by the cartridge case expanding and gripping the chamber walls. i have lube cases in .22 semiautos, but it is not a good idea in the higher pressure center fire rifles. Some rifles and machine guns do require lubrication to work properly, but aside from those it is best not to use oil or grease. If your oil primer seal is not good the lubricant might get into the primers and deactivate them. If anyone knows different please post.
 
Last edited:
1) Do not lube ammunition. NOT A GOOD IDEA.

2) Probably just a case of classic "sticky bolt" which these guns are prone to. It could be just a matter of needing to clean the chamber. If you were shooting mil-surp steel ammo (spam cans?) that ammo is lacquered and after shooting several rounds, the lacquer begins to build up in bore chamber and the bolt sticks. It happens.

Clean the bore well, and just use the cleaning rod to tap on the empty while trying to work the bolt if / when it happens again.
 
the lacquer begins to build up in bore chamber and the bolt sticks. It happens.
This is lies.

Sticky bold can be cured by:
Cleaning your chamber GOOD
Boiling your bolt (disassembled) for about 5-10 mins.
---You will see how much cosmo you missed cleaning when the water cools off.
 
Status
Not open for further replies.
Back
Top