Cz Shadow failed Ejection

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john92awd

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So I am starting to have weird intermittent Ejection problems with my Cz shadow.
Once and a while the spent case will extract but not eject.
Happens once or twice per 60-80 round match.
I have given it a very thorough cleaning including extractor removal and cleaning all the carbon out. Extractor looks good.
I think my ammo is good although it is reloaded....
Seems to happen a bit more with 147 grain bullets
(147 campro, 3.3gn titegroup)
I am wondering if I need to tune the extractor?

I should add that I shot about 2k 124 grain bullets without a failure and about 500 147 grain before I had any problems (all reloads) and the gun has 13lb main and recoil Springs.
Anyone have any ideas?
 
Check you magazine as residues tends to accumulate around the magazine follower. A thorough cleaning and light lube might clear your ejection issues. Also, check your OAL as you might have to make some minor adjustment using 147 gr.
 
Check for short stoking where slide doesn't go all way back, happens with weak ammo and strong recoil spring.
Ejector reprofiling may be required otherwise.
 
what powerfactor does that 3.3gr of TG give you? how is the extractor spring? did you double check the extractor to make sure it's not broken? many people don't realize when the extractor is broken.
 
I'll bet you an e-beer that the empties that do make it out are just dribbling past the back of your hand. And if I'm right about weak ejection of the other empties then what is going on is the occasional one is just weak enough to stick. I'd bet that it's not consistently locking back on the last round as well.


If you run that sort of ammo you just need a slightly softer recoil spring. That'll let the slide come back with a little more snap and the empties will hit the ejector with more verve and arc out a little more strongly. And that should be the end of your jams.
 
Some good advice above! If you do not see any problems with your ejector or extractor, chances are most definitely it is power related. Your 3.3 gr is on the low side, but it should still not cause any ejecting issue. Are you using the stock recoil spring? Was it ever cut by you or a previous owner? Here are some things I would check:

1- Make sure that your extractor and ejector is not broken, and that they are clean.
2- Check your loads. Measure your powder to make sure that it is 3.3 gr you are getting. (lee powder measures are horrible and inconsistent).
3- Check your recoil spring. Change it to see if it makes a difference. If you have to, borrow one from someone at the range to see if that is causing the issue.

Good luck!
 
Ambishooter: confident in my magazines but a cleaning never hurts. My OAL is 1.125 plunk test passes.
Slavex: I don't have a chrony and haven't shot a lvl 3 yet so not sure of PF (I estimate 900 as trinimon stated) a couple more experienced cz shooters told me they are loading to 3.2 titegroup BUT I think they are using the 11lb recoil spring (mine is 13). I also checked the extractor and it looks fine to me, where would it likely break?
BCRider: maybe drop down to 11lb spring? I'm just a little hesitant to load more powerful than everyone else is...
 
I'm just a little hesitant to load more powerful than everyone else is...
Click to expand...
If your fps is 900 that's only a 132 PF. Most factory loads are 140+. Put 0.05 to 0.1 gr more powder in and try it. Your slide will not like you if you run your current load with an 11lb spring.
 
Google what the extractor looks like, but it should have a piece that sticks down from the face of it, a small leg I guess is how you'd describe it.
That load should work a slide no problem. I've run a 115PF load with 13lb spring with no issues.
 
That's not going to affect ejection, that's going to cause premature slide locking.
 
I was hand cycling spent brass last night, it seems to eject straight up and hit the top inside of the ejection port then bounce out of the port. Normal?
 
I'd say the dynamics of the ejection cycle makes doing it by hand totally pointless. You may have or just as equally may not have any issue at hand operated speeds.

Take some ammo to the range and instead of aiming the sights at a target just point the end with the hole at the back stop and put all your attention into watching the energy and direction of the ejected cases. Guns do vary but if they do shoot almost directly upwards I'd say that there's an issue. You're looking for at least some angle to the right. Ideally something around 40'ish degrees. And at the same time I like to see the cases arcing out far and fast enough that they don't fall past the line even with the gun for at least a foot. If they are any lazier than that it MIGHT lead to more stovepipe jams.
 
I thought at first it may be riding the slide due to my high grip but last two times it happend, I was sure I wasn't on the slide. I'm going away for a week but when I get back I'm going to try BCRider suggestion at the range. Might tune my extractor if need be. Slavex, I know you have had many CZ's, have you ever filed / tuned an ejector?
 
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