Mosin and SVT *need help*

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sfbruner

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I went out today to fire my mosin and svt for the first time and it was a disappointing experience to say the least.

With the mosin I was able to fire about 4 rounds and then i started having issues. I couldnt close the bolt on the round. I would have to wiggle it a bit to close. Eventually it wouldn't close at all. Ok....next....my svt

I load up a round, fire, no ejection. Bolt is stuck. I take my rubber mallet to open it and it slides open 1 inch and i notice the casing is rubbing in the chamber. Bad ammo?

The next shot same thing but this time a small piece of the top of the casing was bent in. Bolt stuck again. Gas setting is 1.3. Not a single round extracted/ejected.

Im a beginner to shooting so I appreciate any insight.

Thanks.
 
The mosin nagant issue sounds like Sticky Bolt Syndrome, this happens when the cosmoline heats up making it like glue, you probally have a bit of cosmoline in there clean it out really good, and it shouldn't happen again.
 
The ammo is 67 czech surplus. I bought it from SFRC.

I thought i cleaned it real well. There is a spot in the chamber where the bolt locks that is real hard to get at. I used qtips and i thought both guns were very clean but maybe there was some left over.
 
sfbruner said:
I went out today to fire my mosin and svt for the first time and it was a disappointing experience to say the least.

With the mosin I was able to fire about 4 rounds and then i started having issues. I couldnt close the bolt on the round. I would have to wiggle it a bit to close. Eventually it wouldn't close at all. Ok....next....my svt

I load up a round, fire, no ejection. Bolt is stuck. I take my rubber mallet to open it and it slides open 1 inch and i notice the casing is rubbing in the chamber. Bad ammo?

The next shot same thing but this time a small piece of the top of the casing was bent in. Bolt stuck again. Gas setting is 1.3. Not a single round extracted/ejected.

Im a beginner to shooting so I appreciate any insight.

Thanks.
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Both your Mosin and your SVT need a good chamber cleaning. A bit of lacquer thinner and a good scrubbing with a .410 bore brush do miracles. Clean the hell out of them and you should be good to go.
Joce
 
How much of this has to do with that lot of Czech ammo in the light blue boxes? It seems to have a lacquer finish. I've had similar problems with this ammo but never with the last batch of steel case Russian stuff I had.
 
It seems the op is having trouble getting his bolt closed not open. From what you are describing, the svt has a burr or pitting in the chamber and the mosin headspace is a bit on the tight side.
 
x2 on the .410 brush to clean the chamber. Take one section of rod from your cleaning kit and use it in your cordless drill to spin the brass brush in your chamber with a quick splash of solvent. Do this on both rifles.
 
I have headspace gauges and both rifles pass go and no go. They are both far from closing on field gauge.

The ammo i bought came in a sealed bag inside a green wooden army case.
 
I don't know if it's the same problem or not, but I've had a couple of SVT's jam on ejection - first time I wasn't sure what to do, read up on it and tried to pogo trick. After that dislodged the stuck casing and got the bolt open again, I simply adjusted the gas piston setting (I think in both cases, I went from 1.3 to 1.5) and never had that problem again on either rifle.
 
On the mosin i have trouble closing. It worked fine for the first few shoys and then i couldnt close the bolt.

The svt its the opposite. The case wont eject because the bolt wont open. I used a mallet to open it and aside from the initial stickiness it looked like the casing bulged at the base and was rubbing against the chamber.
 
I have found a few of my Mosins do not like the MFS ammo and will chamber it but only with a bit of force. Since then, I have stopped using MFS and hand load.

For your SVT, it sounds like the gas system is turned too low. Take her out to the range, along with an adjustable wrench, and shoot a few rounds, each one adjusting the gas system to a slightly higher setting, until she feeds and ejects normally.
 
It may also be the bolt head too. As desporterizer's has mentioned, rims may vary and the cartridges, like the 7.62x54R, head space off the rim if I remember correctly.
 
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