SKS ; minor operating problems

Major Commander

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I purchased a "new" Chinese SKS,(not a "D" and it doesn't say "Norinco") my first one. I took it out of the box, took it apart, cleaned it up, reassembled it and took it to the range the next day with some surplus ammo to test it out. Here's what I did and what happened:
Set up a proper target @ 25 yrds., raised red range flag; put on eyes and ears, took the gun out of the case, follow ACTS and PROVE, put on safety, then loaded 1 round into the magazine, chambered the round, released safety,test fired from a bench; fires fine,trigger seems smooth, shell ejects well. Sights are close to right on - probably my inexperience at fault there. Repeat steps as above with 2,3 and then 4 rounds in the mag. I'm liking this gun :dancingbanana:(but boy that surplus ammo stinks like skunk farts!:eek:)
Tried to load 5 rounds into the mag., but they all won't go. So I unloaded the mag. checking the chamber to make sure I hadn't mistakenly chambered a round,checked the mag and barrel for obstructions- nothing, engaged bolt, release safety, pull trigger-it clicks fine; then I closed the mag., loaded 4 rounds, chambered a round, took off safety, pulled the trigger and it wouldn't pull. Double checked the safety- it's off; try again- it won't pull. Put safety back on, unload the mag., eject unfired round, PROVE safe.
Tried this again with 2,and 3 rounds in the mag. and it fired fine. Sometimes it fires fine with 4 rounds in it, sometimes it does not. It will not accept 5 rounds in the mag. and I'm not going to force it. There was no indent on the primers of the bullets which didn't fire (makes sense) and the same bullets fired well when used 1,2, or 3, in the mag.
Maybe I'm doing the loading procedure in the wrong order (I did not get an operator's manual with it so I read it off the 'net), or is this indicative of a more serious problem? I don't mind being limited to 4 rounds, no big deal there, but when you pull the trigger, the gun should fire every time. I'm not knocking the gun, just confused. Any suggestions ? Thanks for your input. :wave:
 
Are you sure the bolt was locking up OK (closing completely). If the bolt does not close completly, it won't fire. When I have this problem which is rarely but it has happenend, I give the bolt handle a smack with the palm of my hand to get the bolt to close all the way and then all is fine.
I have no idea why you can't get 5 rounds in the mag? You're loading using a stipper clip right?
 
Just a few thoughts on your problems here. When you pull back the bolt to release it, don't be gentle. Bang it back and let er go. I know I had a few times I just barely released the bolt, and got a ftf.

As for the 5th round not going in, push hard. Your fingers will give before your gun will. My fifth round is always hard to load. Push hard, and don't trip the bolt release.
 
Tried to load 5 rounds into the mag., but they all won't go. So I unloaded the mag. checking the chamber to make sure I hadn't mistakenly chambered a round,checked the mag and barrel for obstructions- nothing, engaged bolt, release safety, pull trigger-it clicks fine; then I closed the mag., loaded 4 rounds, chambered a round, took off safety, pulled the trigger and it wouldn't pull. Double checked the safety- it's off; try again- it won't pull. Put safety back on, unload the mag., eject unfired round, PROVE safe.
Tried this again with 2,and 3 rounds in the mag. and it fired fine. Sometimes it fires fine with 4 rounds in it, sometimes it does not. It will not accept 5 rounds in the mag. and I'm not going to force it.

your problem is cos by the ammo in the mag , the 4th rd are preventing (sometimes) the bolt from locking .

check your mag and see why you cant load 5 rds , make sure the follower or the follower arm is touching the pin . a pic of the pin area would be helpful cos not all pinning are the same .
 
If they put too big a blocking pin in, or if it was in the wrong spot then it will stop the rds from all getting into mag, and they can then stop the gun from locking closed and therefore not firing.
 
I had a problem some time ago with misfires. When looking at the fired brass, I found some with a nice clean hole in the primer.
The culprit was the firing pin which had not been given a sufficient radius on the edge and was punching little brass confettis from some of the primers.
One of these ended in the locking recess and elevated the bolt just enough to stop the sear from releasing.
I got the firing pin out , put it in a chuck and stoned its edge to a smooth radius. Problem ended.
I know it seldom happens but it's worth to keep in mind when investigating strange misfires.
PP.
 
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Thanks for the good suggestions.
I'm pretty sure the bolt was closing completely as I was letting it fly to chamber the first round. I'll try hitting closed it next time the problem occurs . Only once did I load using stripper clips (of the 60 rounds fired that day.) The mag. and follower seem to be ok, but I'm not an expert.
I didn't see anything unusual about the fired brass, nor did I see any brass filings when I cleaned the bolt/carrier/firing pin, mag., etc. after shooting it. Sorry, I don't have a camera. :wave:
 
Mainspring

Did you take down your receiver cover-carrier-breech assembly?
Check your mainspring. Be sure the WAVY part of it is INSIDE the carrier.
If not, you can experience some strange stoppages.
PP.
 
I had a problem some time ago with misfires. When looking at the fired brass, I found some with a nice clean hole in the primer.
The culprit was the firing pin which had not been given a sufficient radius on the edge and was punching little brass confettis from some of the primers.
One of these ended in the locking recess and elevated the bolt just enough to stop the sear from releasing.
I got the firing pin out , put it in a chuck and stoned its edge to a smooth radius. Problem ended.
I know it seldom happens but it's worth to keep in mind when investigating strange misfires.
PP.
Great advice. I'm having a similar problem with a chinese sks. The carrier sounds and feels to slam home and sometime on the first trigger pull it misfires. Case inspection shows a a good hit and the round will usually fire on another try. I actually feel like the trigger isn't properly set, with a spongy feel that seems some what different. I've had problems before with excessive headspace due to barrel /receiver fit and target style hammer springs but I can't figure this one out. I'll check to see if there is some crud stopping full closure of the carrier and I've changed out the trigger group too to see if this eliminates the problem.I'll see next time. Cheers Pete
 
Thanks Tony. I've got a different one in now,so I have to get to the range again. Long time no see! Did you renew up at POCO? Still waiting for the russians? I heard from Marlin today and an end maybe in sight! Hope to see you and Curtis soon. PS let me know when you're heading up and I'll pack along some tracers for you LOL. Cheers Pete
 
Did you take down your receiver cover-carrier-breech assembly?
Check your mainspring. Be sure the WAVY part of it is INSIDE the carrier.
If not, you can experience some strange stoppages.
PP.

Yep, did that. It's in correctly. I loaded it with stripper clips and jammed them down hard the next time I was at the range; it took 5 ok, but from time to time, the bolt does not want to stay open after the mag. is emptied.No big deal as I can count to 5 (usually). Other than that it functions well. 250 rounds so far- lots of fun! Thanks for the suggestions. O&O . :ar15:
 
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