1911 Keeps Jamming Open!

Riflemen

Riflemen

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Hey guy, I'm having an issue with my Norinco 1911A1C. It jams open while extracting spent casings after 3 or 4 shots. I've tried it with 2 types of ammunition that previously fired without issues. I haven't had any problems other than this, after about 1000 rounds and 4 cleanings. Anybody know what could be going wrong? I can't see any obvious signs of wear on the parts of the gun, or any scoring or marking indicating something is getting caught or stuck. Any suggestions?

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Thanks!
 
Ahhh....Norinco quality products !!....sorry couldn't resist....lol.
Make sure the ejector channel in the slide is relatively clean ,could be as simple as a tiny filing of brass causing you grief ?
 
So your picture shows a fired case and the slide did not cycle properly?
Is it easy to clear or is it stuck in that position?
What does it feel like when you cycle the action by hand?
After market guiderod issue?
Not unlocking properly?
 
You can't clear it by hand, tools were required. Once it's ejected, the action slides and feels normal. I've had it do this with 2 different kinds of ammunition which I've used before and not had any problems with. It's done this 3 times in the last 20 shots fired :(
 
If it's jamming with a spent round I'd strip the gun and carefully check around the chamber area with particular attention to the lugs for signs of some swelling or a crack. If your barrel stretched or cracked the casing will bulge out into that area and be hard to pull through the smaller opening. Hence the jamming. I suppose it's not the only reason for this sort of issue but it's one of the more likely ones.

Inspect the spent casings for signs of this sort of bulging as well. If I'm right you'll see some residual swelling and maybe scuffing on the one side where the bulge occurred.
 
There are some definite signs of stress on the 2 casings I have that were stuck... Is it normal for the barrel to be a bit loose when the slide is open?
 
Good point on the barrel bushing being a possible source of binding.

With a couple of the casings you can also check for a stretched out chamber I suggested earlier. Field strip the gun and chamber check the cases. If you can see the mark from the extractor line that up with the 3 o'clock position and push the casing into the chamber. If it's swelled then the case will rub a little going in then become somewhat loose. Trying to turn it more than a few degrees either direction will result in binding as well as trying to pull it straight back.

If you get this sort of behaviour then your chamber is swelling out. Quite likely due to the lugs on the bottom being bashed due to the wrong link length. And if the casins fall into the chamber and can be rotated easily then at least you've found one thing that it isn't and can focus on other spots.
 
Thanks for the input guys, I'm going to try a new barrel and a new bushing (why not if I'm already buying a barrel). Only thing is, I can't find anyone selling a 4.25" barrel. Can I use a 4.5" and have it stick out a bit more? I can still take the gun apart right?
 
Riflemen said:
There are some definite signs of stress on the 2 casings I have that were stuck... Is it normal for the barrel to be a bit loose when the slide is open?
Click to expand...

The barrel should be quite loose with the slide locked back.
Do the "definite signs of stress" jive with what BCRider wrote?

So, the bushing is fine, your link is fine and there is no signs of stress or wear of the locking lugs?

Strange.

Post some pictures of the brass with the stress signs.
 
Alright here are some shots of the brass (and aluminum ;) ). I've fired hundreds of those aluminum rounds through it without any problems, in fact, they seem to work best for it. Kind of handy because the scoring and marking on the aluminum is more pronounced than it is on the brass, but both are marked similarly.

To me, it appears the extractor pin marks are a bit large, but that could be from having to bash the slide open with a punch, through the barrel. Both casings have an oval shaped marking to the left of the extractor pin marks. Other than that, the casings appear fine. You can clearly see a mark on each running along the circumference of the casing, not up and down it, which is why I think it may be bulged. I'm going to take the gun apart and stick the casings in the barrel and see if they turn in a bit here.

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I can do that tonight yes. Last night I went over it piece by piece again. I found a few pretty large burrs on the barrel, on the bottom and the first lug. I filed down the burrs on the entire barrel. Will post pics of the lugs tonight after work. It's too bad i have to drive 45 minutes to the range and right now can only go on the weekend :( Makes trouble shooting (no pun intended! ;) ) a lot more difficult.
 
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