CZ 858 tactical Jamming issues
- Thread starter SaskGun
- Start date
Yes absolutely more info needed. I have never heard of extraction or feed issues with this gun as the ejection port is MASSIvE. My guess is you don't clean the guns bolt/extractor properly, you mag might be defective or your using weird ammo that's way heavier or something. I've never had a single issue with extraction, only failure to fire because of the gremlin. This was easily fixed with a tabbed bolt carrier. Since then I've put 800 rds of Czech fmj surplus ammo through it at a very fast pace and have not had a single problem.
Bottom line, clean your f-ing gun well, check all parts as your cleaning, use surplus ammo (why not the kind that's basically made for the gun, not some cheep Chinese crap or Bulgarian that's made by impoverished children).
The end
Bottom line, clean your f-ing gun well, check all parts as your cleaning, use surplus ammo (why not the kind that's basically made for the gun, not some cheep Chinese crap or Bulgarian that's made by impoverished children).
The end
I havemt had any problems, why yes brass casing can cause feeding issuse. How you have seen several accounts of this with others leads me to believe you are riding the slide into bsttery causing it to hang up somewhat.
- Location
- Niagara Region, Ontario. For now
Wow, way to provide no info whatsoever OP! 
I would think he is speaking of the failure to extract, and possible stuck case issues that are the result of built up laquer from surplus cases.
Easy solution is to clean the hell out of the chamber with an appropriate sized bore brush, possibly attaching it to a drill.
I went through a couple cases of surplus with my 858 before selling it, and I don't think I ever had an issue with this problem though.
Just clean it well and often.
I would think he is speaking of the failure to extract, and possible stuck case issues that are the result of built up laquer from surplus cases.
Easy solution is to clean the hell out of the chamber with an appropriate sized bore brush, possibly attaching it to a drill.
I went through a couple cases of surplus with my 858 before selling it, and I don't think I ever had an issue with this problem though.
Just clean it well and often.
surplus ammo is the only ammo they use, except in the rare case they would take it hunting as FMJ is illegal to hunt with because it can go through many animals in a row.
FMJ isn't illegal to hunt with everywhere, and it certainly isn't illegal in certain places for big game because it can "go through many animals in a row".
My CZ 858 has been extremely reliable. Hell, even my other CZ with B&T mag adapter wasn't bad after the first round. That's with Czech, Romanian and Russian surplus ammo.
My CZ 858 jams continually and has the classic fail to #### trigger gremlin. The gremlin will be an easy fix as it only involves adding spacers to the trigger mechanism where it was civilianized.
The FTE FTF problem has nothing to do with the gun being dirty and is consistent with all four mags so im kind of at a loss
The FTE FTF problem has nothing to do with the gun being dirty and is consistent with all four mags so im kind of at a loss
have Some jam issue
bullet jam went they are pushed in the bore , with some russian copper plated cartridge from 1951 and 1958 . the bolt don't close enough to chamber the cartridge but with Czech ammo no prob , the damn thing is, i have more Russian ammo than Czech ,
when the bullet jam it have some heavy scratch on the cartridge
the Czech cartridge seem to be harder and have some shellac on it maybe that thing doing a difference ?
bullet jam went they are pushed in the bore , with some russian copper plated cartridge from 1951 and 1958 . the bolt don't close enough to chamber the cartridge but with Czech ammo no prob , the damn thing is, i have more Russian ammo than Czech ,
when the bullet jam it have some heavy scratch on the cartridge
the Czech cartridge seem to be harder and have some shellac on it maybe that thing doing a difference ?
have you ever greased or oiled your piston? Dont. keep it dry dry dry. I saw a fella with grease on the piston and he had this issue. It was not sending the carrier back far enough because insane carbon gunked up the rod/hole area. I have actually never done anything but a quick dry cloth with high ammonia windex on it on the piston. Thats after 4000 rnds.
-chris
-chris
just coming back of the pit ^^
i don't know if it is the dry piston , or my little grinding of the lips in the receivers but with the Russian bullet 0 jam issue this time ,
the solution i think is look where the bullet block , some mark will appear on it , and grind a little bit where it block , after that go trying to shoot or cycle it manually , if the bullet block , grind it another bit , and retry , but dont grind too much just the minimun !
i don't know if it is the dry piston , or my little grinding of the lips in the receivers but with the Russian bullet 0 jam issue this time ,
the solution i think is look where the bullet block , some mark will appear on it , and grind a little bit where it block , after that go trying to shoot or cycle it manually , if the bullet block , grind it another bit , and retry , but dont grind too much just the minimun !
Wow, way to provide no info whatsoever OP!
I would think he is speaking of the failure to extract, and possible stuck case issues that are the result of built up laquer from surplus cases.
Easy solution is to clean the hell out of the chamber with an appropriate sized bore brush, possibly attaching it to a drill.
I went through a couple cases of surplus with my 858 before selling it, and I don't think I ever had an issue with this problem though.
Just clean it well and often.
This ^^^^
I bought mine used and it had a ton of ammo through it. It jammed up so good I broke the extractor dislodging it. There was a lot of laquer build up in the chamber, as in you could see the green tint.
I took some laqure thinner and a cotton mop brush for a 12 gauge and cleaned the crap out of the chamber. Then I used a brass 7.62 brush to clean with a drill. This took about 15 min and it works 100% now for over 1000 rounds.
Shawn
I took my VZ out today for the first time and had several extraction failures.
The first one occurred on the last round in the mag, the round fired, the bolt locked back, but the fired case stayed in the chamber. I was easily able to pull it out with my fingernail.
The second would best be described as a failure to extract completely. The round fired, the bolt came back, it stripped another round off the mag, but the fired round did not clear the ejection port - the bolt slammed shut on it and crushed the case mouth. The round that was stripped off the mag was intact and lined up to chamber properly from what I could tell.
The third occurrence was almost the exact opposite - like the first occurrence the round simply was not extracted. Unlike the first, there was more rounds in the mag - the bolt stripped the next round off the mag and since there was already a round with the case head sticking out of the chamber, the bullet slammed against the inside of the action instead of being fed up into the chamber. The round was a write-off, the bullet had been pushed into the case, but the offending case was again easily removed with my fingernail.
The fourth time was the same as the first, as I was single-loading the mags for diagnostic purposes.
And that was in only 30 rounds. The other rounds all ejected slightly forward and slightly to the right. Ammo used was Winchester white box 55 grain FMJ.
I'm going to take a few pictures of the chamber and bolt face for you guys but everything looks pretty good to be honest. Next steps are a tear down and full cleaning and brass check to see if there any weird burrs or anything evident.
The first one occurred on the last round in the mag, the round fired, the bolt locked back, but the fired case stayed in the chamber. I was easily able to pull it out with my fingernail.
The second would best be described as a failure to extract completely. The round fired, the bolt came back, it stripped another round off the mag, but the fired round did not clear the ejection port - the bolt slammed shut on it and crushed the case mouth. The round that was stripped off the mag was intact and lined up to chamber properly from what I could tell.
The third occurrence was almost the exact opposite - like the first occurrence the round simply was not extracted. Unlike the first, there was more rounds in the mag - the bolt stripped the next round off the mag and since there was already a round with the case head sticking out of the chamber, the bullet slammed against the inside of the action instead of being fed up into the chamber. The round was a write-off, the bullet had been pushed into the case, but the offending case was again easily removed with my fingernail.
The fourth time was the same as the first, as I was single-loading the mags for diagnostic purposes.
And that was in only 30 rounds. The other rounds all ejected slightly forward and slightly to the right. Ammo used was Winchester white box 55 grain FMJ.
I'm going to take a few pictures of the chamber and bolt face for you guys but everything looks pretty good to be honest. Next steps are a tear down and full cleaning and brass check to see if there any weird burrs or anything evident.
Shouldn't be lacquer since I only shot commercial brass-cased loads, but I hit it with the brush and a couple rounds of foaming bore cleaner and PLENTY of patches. Nice thin coat of oil on the rails and down the pipe. I supposed we'll see what happens next time.
