Mosin Nagant problem. (not sticky bolt)

[henrifirstman]

Okay, so I am a Mosin enthusiast and I own one 91/59 carbine (1943 izzy).
It's fine.
My friend however has a 1939 Tula 91/30.
He was having issues extracting/ejecting.
He would fire a round and it would work just fine (according to him) but he couldn't extract it.
I cleaned the hell out of it and got all the cosmoline out.
I decided to load a couple of empty 7.62x54r shells into the chamber with his rifle. ( a few surplus russian brass and one steel wolf case.
None of these would fit into the chamber and the bolt would not close. I tried pushing the shell into the chamber with my fingers and ended up having to push them back out with a cleaning rod.
His chamber looks different than mine too which is weird. (it sort of tapers into the barrel a little more drastically if that makes sense. i dont know how else to explain it.)
I think his chamber is smaller. WHY!!!!???? :banghead:

I heard somewhere than the Finns rebarreled some Mosins but this looks all Soviet to me.
Any advice would be greatly appreciated.

 

[Gunnerboy]

is it rebarreled into the 6.5x54r? im doubting that if he fired normal 762 ammo thru it and if its all military but pics would be nice

 

[henrifirstman]

hold on... trying to upload pics

 

[Gunnerboy]

I see no pics ?

 

[henrifirstman]

So the closer looking shot is of my 91/59 and it shoots okay.
The other picture is of the 91/30. The inside of the chambers look a little different. Maybe that's okay since his is 1939 and mine is 1943 but I'm not sure. Well here's the pictures.

 

[henrifirstman]

Oh and while I'm posting pics, I have this one of my baby lol.

 

[henrifirstman]

*Sigh*
You can't even really tell.

 

[Gunnerboy]

well they both look pretty close to me could be that his bolt is non matching for that rifle and that the bolt head is a little loose causing the headspace to be off by .001 of an inch causing it to do what you have said

 

[henrifirstman]

Negative.
My bolt does the same thing in his rifle.

 

[caribou]

I'm sure his chamber is fine, it had to be test fired and sighted at the factory, most likely during the war and was test fired again after the factory refurbishment (unless his is a much earlier import)ost likely caked with shiney cosmo and laquer....They cosmo'd the chamber ALOT, and when it dries and get a few shells pressur, its HARD.............the chamber on any rifle in long term storage is the most important 'Place" shall I say, because a bad chamber IS a bad rifle. Cosmo is some freeky stuff, it even sorta shatters when its really dry'd hard....

I would try to clean that chamber again, with brake claener and a good bore brush or bronze or brass. Cosmoline can be pounded with a sfew shots and look like shiney steel in there, as well as laquer building up from firing pressures untill the chamber is tight.

Ive had to clean the chamber on an M-39 once 4 times till it was working normally, and still does. As well Ive had a couple refurb 91/30's that took a couple gos at it to get over the same problem. The chamber on a rifle must be unpitted

As well, if you are experiancing "sticky bolt" its the Mosins way of letting you know to clean it.

 

[Frozen North]

Fired casings may not fit into a chamber because they expand when fired. This may be completely normal. This is why cases must be resized before they can be reloaded.

Will standard unfired 7,62x54r ammo chamber in the gun, and will the bolt close without too much trouble?

Will the bolt open without too much trouble after you fire it?

Are the casings left in the chamber when you pull the bolt back?

 

[henrifirstman]

The extractor is fine.
I tried an unfired round (got rid of the powder and bullet)
It fit with some resistance and extracted with a little resistance.

I guess I'll try cleaning it for the 3rd time haha.

 

[Frozen North]

Caribou is right.... everyone thinks they have their mosin chamber clean! Until you chuck a 20 gauge bore brush in a drill and squirt some carb cleaner in there, it aint clean!

Getting things warm really helps loosen it.

 

[Powerglide]

What frozen said^

 

[henrifirstman]

should i put a pulled out bullet down the barrel to plug it, then fill it with carb cleaner?
ive been using the 20 ga and drill technique but im not noticing any progress.

 

[Murphy4570]

I've just squirted brake kleen down there, eats the cosmo up nicely.

 

[Frozen North]

Just squirt some in there and give it a spin. Keep rinsing so you are not just smearing the cosmo around. Brake cleaner is safer to use than carb cleaner, carb cleaner is some HARSH stuff. I highly recommend you take the gun off the stock because the carb cleaner will wreck the shellac finish horribly.

 

[henrifirstman]

Thx man. Its been of the stock this whole time. Cosmo comes out grey right? I think I got this.

 

[Frozen North]

Cosmo in chambers should come out grey or black due to it mixing with powder residue and other gunk. Just keep at it. Be gentile and good luck.

When you are done, go run a whole bunch of surplus ammo through it and see if you can get the fore end to drip cosmo again!

The stuff just wont quit!!

 

[henrifirstman]

Thanks frozen, power, murphy, caribou, and gunner. Ill give it a shot.

 

[henrifirstman]

several hours later... nothin :banghead:

 

[Gunnerboy]

I still think headspace might be off just a touch i had a similar issue with a lee enfield once.

 

[Trent]

Oh my be careful with that carb cleaner. The only goddamn substance on the planet that'll kill a cockroach dead in his tracks. Beats the snot out of RAID. "Do not take $200, do not take one more step, you are dead!"

Use outside with eye and hand protection, don't want that **** soaking through your skin, don't want to breathe in the vapors..

 

[Tempest 455]

Most of my Mosins will not chamber a spent round.

 

[Murphy4570]

Use some strength when you work that bolt. Mosins were built for strong, hardy Soviet soldiers. They are rough and reliable, not smooth like Western rifle designs. Don't be afraid to muscle that bolt.