Svt-40 emergency?

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GunNewb

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So my brother just bought himself one of those beautiful svt-40 tokarevs. Gorgeous gun, fun to shoot and were smoking clays at 200 yards. Sadly, the things been acting up a bit. On our first range trip we experienced a jam where the rifle fired and failed to eject the cartridge. It took a good amount of pulling on the bolt (okay, slamming the bolt) back to release the cartridge out of the reciever.

I started to watch the gun after this and noticed that the bolt carrier failed to go all the way forward (about 1/4 inch back) during firing.

Now, I may have just wasted your time in reading this because my brother tells me he forgot to grease/oil the damn thing. Do we reckon that could be the issue or should we adjust the gas or something?
 
Put the gas system on 1.3 to start and clean the chamber really well. Surplus cases don't like a sticky chamber. Use a small section of cleaning rod and a drill and a 4/10 gauge bore brush and solvent. Swab and repeat. Done.


GunNewb said:
So my brother just bought himself one of those beautiful svt-40 tokarevs. Gorgeous gun, fun to shoot and were smoking clays at 200 yards. Sadly, the things been acting up a bit. On our first range trip we experienced a jam where the rifle fired and failed to eject the cartridge. It took a good amount of pulling on the bolt (okay, slamming the bolt) back to release the cartridge out of the reciever.

I started to watch the gun after this and noticed that the bolt carrier failed to go all the way forward (about 1/4 inch back) during firing.

Now, I may have just wasted your time in reading this because my brother tells me he forgot to grease/oil the damn thing. Do we reckon that could be the issue or should we adjust the gas or something?
Click to expand...
 
The neck and shoulder portion of the chamber is fluted to allow gas pressure to help push the empty cartridge to the rear after firing. keep scrubbing with the brush and drill until those flutes are nice and clean.
" This design was added purposely to aid in extraction of the fired case from the chamber. This is a similar problem experienced with the FN-49 when it has extreme gas pressures. Extreme gas pressure can cause early extraction of the case before bore pressures have reduced enough to allow the cartridge case to contract and be released from the walls of the chamber. The fluting facilitates gas being bled off and rapid cooling of the metal case to allow the metal's contraction required for proper ejection. Fluting of the chamber also aids in extraction of the fired case if buildup of residue from firing a high quantity of ammo or firing low quality ammo (lacquered steel cases, etc). "
 
taking her out tomorrow, will adjust gas and make him swab the hell out of that chamber. Ill talk to you in 200 rounds, thanks lads!
 
Did you clean it before you shot it for the first time? Sounds like a potential case of operator error to me. They will blast all day long and never skip a beat as long as they are a)clean and lubed and b)have the gas adjusted properly!
 
ChopperDoctor: Wins for the best explanation ever.
I bought an SVT-40 when I was home on leave back in March, and loaded up a bunch of ammo (already reloading for my Moisin Nagant) and had a blast. Don't much care for the ding in the brass but they do reload quite readily. I may take it deer hunting this fall.
 
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