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-   -   SVT-40 help (http://www.firearmstalk.com/forums/f18/svt-40-help-2817/)

mkopit 12-26-2007 02:26 AM

SVT-40 help
 
I have an SVT-40. Its an original rifle and I have stripped it several times. I'm running into a problem with it because after I shoot a round the shell does not come out of the rifle. I have to get it out manually. Sometimes it will fire several rounds normally and then jam again. I think it maybe a problem with the gas adjustment. If anyone has had similar problems or knows a solution please let me know.

marysdad 12-29-2007 03:05 AM

The first thing to do is clean the heck out of the chamber. Don't use bore solvent. Use brake cleaner, acetone, or denatured alcohol. Build-up of lacquer in the chamber is the most common culprit with these. Turning up the gas will eventually result in ripping the head off of a sticky case, leaving the front portion stuck in the chamber (and you don't want that). After you have cleaned the chamber, turn the gas down to 1.2 and work back up until it functions reliably. The less gas, the better.

Another thing to check is the fit of the gas piston. If it is too loose, excessive gas blow-by can contribute to poor functioning. The piston (the part that screws into the gas valve) can be expanded a little by clamping it in a vice, placing a ball bearing in the end, and striking the bearing with a hammer. Just go easy and try the fit until it slides, but doesn't have excessive play.

rnbklatt 01-03-2008 04:46 AM

rnbklatt
 
Quote:

Originally Posted by mkopit (Post 12980)
I have an SVT-40. Its an original rifle and I have stripped it several times. I'm running into a problem with it because after I shoot a round the shell does not come out of the rifle. I have to get it out manually. Sometimes it will fire several rounds normally and then jam again. I think it maybe a problem with the gas adjustment. If anyone has had similar problems or knows a solution please let me know.

i have one of these rifles and same problem I use the cleanest and newest ammo I can find I also reload and I only use once fired shells full lengthresize and clean cases also I find sporting ammo better for reloading ammo must be clean and I wipe the cases with an oily rag and that all helps


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