SVT 40 jammed problems

[francher]

Hi everyone's, I got a 1943 Tula SVT 40, but the bolt always can’t open and failed to eject the shell, the shell is stuck in the chamber. Using the Czech silver ammo. Every 3 to 4 rounds, the bullet becomes expansion to much after fired, so it stuck in the chamber. How I solve this problem?

 

[Dmitri]

You could start with cleaning and polishing the chamber.
Also check the extractor for excessive wear.

 

[damullet]

Did you try different gas settings?

 

[francher]

Thanks, I’ll try it

 

[M1-Garand]

Field strip it and give it a good cleaning,look in the chamber,it was fluted to aid in extraction,you should be able to see all the little grooves in the neck area.
Best is to take a .45 chamber brush and give it a good scrubbing until the chamber is shiny and the fluting is clearly visible.
Also make sure the gas system is spotless and the gas adjusting pin turns freely,start at 1.5 gas setting and see how it works.

And since you are shooting corrosive ammo everything has to be taken apart and the corrosive salts washed out or you will have keep having these problems,this is what made these rifles fail during the war,the uneducated masses did not know how to look after them,the Germans however loved them,but they knew how to look after their weapons.

 

[PinkyPlinker]

I had one that would do that with Chinese surplus. Locked up tight. Zero problems with Bulgarian. It would cycle that stuff with ease. Do you have any other ammo you can try?

 

[Gr33zi3]

Same issue as pinky plinker with my first SVT. Cranking the gas setting seemed to fix it,

Also had light primer strikes had to strip the bolt and give it a good clean.

 

[francher]

Field strip it and give it a good cleaning,look in the chamber,it was fluted to aid in extraction,you should be able to see all the little grooves in the neck area.
Best is to take a .45 chamber brush and give it a good scrubbing until the chamber is shiny and the fluting is clearly visible.
Also make sure the gas system is spotless and the gas adjusting pin turns freely,start at 1.5 gas setting and see how it works.

And since you are shooting corrosive ammo everything has to be taken apart and the corrosive salts washed out or you will have keep having these problems,this is what made these rifles fail during the war,the uneducated masses did not know how to look after them,the Germans however loved them,but they knew how to look after their weapons.

Thanks for reply, how do I clean the salts in the barrel? Pouring hot water?

 

[M1-Garand]

Thanks for reply, how do I clean the salts in the barrel? Pouring hot water?

Yes,hot water works the best,don't forget to clean the gas system out as well,if you have an air compressor blow all the water out with compressed air.
I have a little "Hotshot" steamer, spits out steam and hot water,works excellent.

 

[marshall]

I don't like the looks of that shoulder /neck on your fired round, but have not played with these for years.

 

[M1-Garand]

I don't like the looks of that shoulder /neck on your fired round, but have not played with these for years.

Agreed,normally you see clearly the little lines from the fluted chamber in the neck area,my guess is that the flutes are plugged with crud or cosmoline

 

[sidester]

OP buy a STG57 cleaning kit
-->

& scrub the chamber.

 

[mbogo3]

The chambers are fluted are they not?Not seeing that on the fired case?