I finally took my sks shooting since I bought it, I purchased a few boxes of that norinco red box non corrosive ammo from cabelas and shot it but I found every time the last round with not eject, it would get stuck in the chamber and be a pain in the ass to get it out. I thought it was just that one time but it happened every time I loaded more of that ammo. I had a couple boxes of barnaul and no issues what so ever.
Sks picky with ammo?
- Thread starter TrendyRendy
- Start date
It doesn't make sense to me that this would be ammo related.
The quality of ammo would have to be inconsistent however you have described a consistent pattern that occurs in the same way each time.
The question to me is "what factors change between the 2nd to last and last rounds?" and how can that impact extraction (Not ejection)?
To prevent extraction then ejection there needs to be a level of resistance equal or greater than the energy imparted by the gas system (which seemingly functions fine on shots 1-4) that then causes the stoppage.
My suggestion is that you start thinking about that area.
The quality of ammo would have to be inconsistent however you have described a consistent pattern that occurs in the same way each time.
The question to me is "what factors change between the 2nd to last and last rounds?" and how can that impact extraction (Not ejection)?
To prevent extraction then ejection there needs to be a level of resistance equal or greater than the energy imparted by the gas system (which seemingly functions fine on shots 1-4) that then causes the stoppage.
My suggestion is that you start thinking about that area.
A few thoughts - How well are you cleaning the chamber - Hot = Sticky ? - Have you cleaned the WHOLE gas system including the 'piston extension' - could this get hot and sticky ? - Is the magazine follower getting in the way of extraction ? - Is the extractor claw area clean (and sharp) ? Of course, it could be none of these . . . I'm just s-ballin'
- Location
- Blaster land, Okanagan BC
Cleaned the chamber thoroughly? Is the ammo laquer cases of copper washed?
The rifle is cleaned, after I bought I stripped it down and cleaned it thoroughly. Made sure the system moved as it should without hang ups.
Extractor is clean and sharp, when the case would get stuck it locked the the bolt forward preventing it to cycle back. I had to smack the butt of the rifle on the ground to open the bolt when it would break part of the rim on the case.
The norinco I shot was copper washed where the barbara was lacquered.
Extractor is clean and sharp, when the case would get stuck it locked the the bolt forward preventing it to cycle back. I had to smack the butt of the rifle on the ground to open the bolt when it would break part of the rim on the case.
The norinco I shot was copper washed where the barbara was lacquered.
I've had an SKS get very sticky due to a buildup of laquer in the chamber. It was so stuck I had to take it home and use a 2x4 to smack open the bolt. I couldn't really see the laquer by eye, but I cleaned the chamber at my fathers insistence anyway and haven't had a problem since.
CZ Shooter
CGN frequent flyer
I thought this was a click-bait at first..SKS malfunction is like the unicorn...everyone heard about it, but no one has actually seen it..lol
Sorry couldn't resist...on the serious note the ammo can pretty much be ruled out.
If the case gets stucked on the last round every time, I'm thinking this must be a chamber issue of sorts.
I know you said you cleaned it, but if there was some copper fouling, it might be hard to get out 100%.
Try to shoot 3, then pause for 5 minutes, let it cool off and squeeze off the last 2.
If no malfunction happens, it would be safe to assume that it has to do with the heat combined with some residue (or possibly something being out of spec)?
Sorry couldn't resist...on the serious note the ammo can pretty much be ruled out.
If the case gets stucked on the last round every time, I'm thinking this must be a chamber issue of sorts.
I know you said you cleaned it, but if there was some copper fouling, it might be hard to get out 100%.
Try to shoot 3, then pause for 5 minutes, let it cool off and squeeze off the last 2.
If no malfunction happens, it would be safe to assume that it has to do with the heat combined with some residue (or possibly something being out of spec)?
For cleaning my chamber I use an old shotgun brush and spin it with a drill. It sounds like something is 'getting heated' then causing the jam. There may be some lacquer or Cu-wash sticking, so maybe use mineral spirits or something. Just be careful of the wood if barrel is still mounted. Or possibly some Carbon-ring deposot ? Do you have a borescope ? I've found 'unexpected' crap in my chamber and first couple inches of the barrel, so started using the old brush there. I also use Boretech Carbon solvent - lots from the Chinese ammo.
Finally, have you posted a Q on SKSboards .com ? There are some very knowledgeable folks there, too.
Finally, have you posted a Q on SKSboards .com ? There are some very knowledgeable folks there, too.
- Location
- Blaster land, Okanagan BC
I’ve had an sks that always stovepiped the last round in the mag, it turned out to be the way the mag follower was pinned. I’ve had an svt40 that would load and fail to extract the first round, it had a rough spot in the chamber. The pin was sitting proud of the follower on the sks, I peened it tight and filed it flush. Stovepipes stopped, the chamber of the svt40 got a quick Polish with 2000 grit wet dry paper wrapped around a cleaning brush chucked in a drill and oil. Problem solved and it never had a fte after that.
I'll try those cleaning methods forsure, maybe there is something I don't see, I don't know.
But see when I switched to barnaul there was absolutely no issues, it ran perfect, just the norinco had the issue always on the last round. It almost was like the rounds were loaded too hot and it expanded to the point of getting stuck in the chamber locking the bolt in the forward position, but what are the chances that the last round every time was hot.
I don't now the year of it.
I have some silver box norinco, should try that and see. Next time I head out I'll test it out and see, I'll try these cleaning techniques as well.
But see when I switched to barnaul there was absolutely no issues, it ran perfect, just the norinco had the issue always on the last round. It almost was like the rounds were loaded too hot and it expanded to the point of getting stuck in the chamber locking the bolt in the forward position, but what are the chances that the last round every time was hot.
I don't now the year of it.
I have some silver box norinco, should try that and see. Next time I head out I'll test it out and see, I'll try these cleaning techniques as well.
Are you loading the rifle from the top or are you swinging the mag body open and bottom loading it?
I’ve encountered a few sks that would have issues if they were loaded from the bottom, not sure why though
If possible try using a plastic tapco mag and see if the problem goes away
I’ve encountered a few sks that would have issues if they were loaded from the bottom, not sure why though
If possible try using a plastic tapco mag and see if the problem goes away
This info would of been good to post in your first post. Not after everyone chimed in and I assume all assumed your talking about a stock rifle.
Yes, maybe if you try the ammo in a stock rifle OR another with the same mod. I've been running Chinese Mil since I ran out of Czech and Russ mil-ammo in my '51 Tula dressed in Tapco with duckies and no probs. I'm guessing that Ch ammo comes from the sames plant as the Nor ? maybe not ?
GunsNotPuns
CGN frequent flyer
I've run entire factories worth of Norinco 7.62 dating back to the late 1980s and early 90s out of SKS-45s and I find it hard to believe that rifle would ever have a problem with it.
As others have said, me thinks your problems are stemming from the rifle's modified nature. I little love for those Tapco magazines.
As others have said, me thinks your problems are stemming from the rifle's modified nature. I little love for those Tapco magazines.
