CZ858 bolt jammed solid - please help

eldercanuck

eldercanuck

Member
Rating - 100%
3   0   0
Location
Berta!
Took my CZ858 to the range for its first firing today. Fired well for the first 15 rounds. For the next 5, it started to stovepipe, then on round 25, the bolt jammed about 3/4" open.

There is still about 1/4" of play in the bolt travel, but, for love or money, it will not close and will not open...so I cannot remove it. I've measured down to barrel to ensure that a live round is not chambered. I'm not 100% whether the casing ejected on the last round or not.

Is there any advice that any of you might have for me on how to clear this...or do I have to ship this one back to Wolverine? I hope something can be done, as this appeared to be a good shooter.

Thanks in advance for your advice.
 
I will tag this and respond tomorrow....My brother had the same thing happen to his. I will ask him and post about if noone else does, though I'm sure you will get a sh**load of info on here pretty quick....
 
Give the charging handle a boot.

You can use the edge of a workbench, a post, a rubber mallet or, go figure, your boot.

Did you clean it before shooting it?


It's either got a stuck case or something in the receiver has piled up and is blocking the bolt. Given that it moves the 1/4 inch, my moneys on stuck case.
 
did you clean before firing? and if yes, did you do a function test? i smell you possibly assembled it incorrectly and something is not fitting right internally
 
Given that it was its first firing I'll give three options.

1) If it previously owned, it's fouled, corroded, or otherwise damaged. Since you say ship back to wolverine, I assume you bought it new.

2) If it's brand new and you didn't clean it, then it's full of cosmolene. If the bolt is partially open, and yet you still can't see into the chamber to tell if there's a casing in there, try dropping the mag and looking in there. Basically, if you can see a casing, knock the bolt free with a rubber mallet.

3) If you did clean it, you reassembled wrong. In this case, you'll probably have to beat it open, but you'll probably damage something.

My money is on #2. Also, there's a hairs chance that the locking lugs on the bolt broke. I've heard of it happening once, but you'll only really know once it's apart.

If it does turn out to be a stuck casing, completely strip the gun down to base parts, and bathe it in hot soapy water. Repeatedly. Whatever it's being washed in will get coated in brown greasy oily cr@p. After you're done, dry it very thoroughly and oil it all over.
 
happened to me too but mine never got stuck open a bit juss all the way closed jammed solid, common i guess?? give'r the boot like stevo said. i hit mine up against a wooden 4x4 post,pushed it right back out flew the casing, and was back shooting in no time, it only did it the first time i took it out to the range after that never again, but it happened 2 or 3 times in that one day.
 
misfits said:
happened to me to common i guess?? give'r the boot like stevo said. i hit mine up against a wooden 4x4 post, it only did it the first time i took it out to the range after that never again, but it happened 2 or 3 times in that one day.
Click to expand...

Did you give the chamber a proper cleaning with something like lacquer thinner after that?

I wouldn't say it's "common". That is to say, it happens to everyone often.

I've had one stuck case in 8-10k of the Czech surplus and it tapped out with a rod quite easily. It seems to happen more frequently to new shooters, guys with new rifles and guys who don't shoot much.
 
hit the hammer right on the nail, was a new shooter didnt know to clean it before shooting it never owned a red rifle before. yea i cleaned it all out after when i got home form the range.
 
sounds like a stuck casing . first remove the mag and check the locking lug is in place.

then use a 2x4 about foot long , wack the handle several times, the extractor should disengage, exposing the back of the ammo. i use electrician tape to protect the finish.

please be careful where you are pointing the muzzle while you are using the 2x4.
 
And...this is why I love this site!!

Thanks so much for your replies.

To answer your questions, yes - it is a new rifle, and no - it appears that I didn't clean it properly (just the barrel bore...silly me) as I was in a crunch for time to test it at the range.

It was, as so many of you suggested, a stuck casing, and was easily remedied with a judicious application of rubber mallet.

Clearly, I am a red rifle noob, and have much to learn.
 
eldercanuck said:
Thanks so much for your replies.

To answer your questions, yes - it is a new rifle, and no - it appears that I didn't clean it properly (just the barrel bore...silly me) as I was in a crunch for time to test it at the range.

It was, as so many of you suggested, a stuck casing, and was easily remedied with a judicious application of rubber mallet.

Clearly, I am a red rifle noob, and have much to learn.
Click to expand...

Good stuff.

There's plenty of info here. Most every question you can think of has already been asked. Make sure you've got the search defaults set correctly in the site search engine and you should be able to find it.
 
Soak all part's over night in Kroil oil then Flitz the gas piston and the bolt carrier key. Also dis-assemble and scrub the free floating piring pin to ensure that when re-assembled it still rattles. Then look to purchase some MFS ammo so you never have to worry about corrosion again. Plus donate the un-used corrosive ammo to me for proper disposale :p
 
Satain said:
Soak all part's over night in Kroil oil then Flitz the gas piston and the bolt carrier key. Also dis-assemble and scrub the free floating piring pin to ensure that when re-assembled it still rattles. Then look to purchase some MFS ammo so you never have to worry about corrosion again. Plus donate the un-used corrosive ammo to me for proper disposale :p
Click to expand...

What exactly is "Flitz the gas piston and bolt carrier key"?

I've never disassembled either of my bolts. I use brake cleaner to get the gunk out of the firing pin channel.
 
Stevo said:
What exactly is "Flitz the gas piston and bolt carrier key"?

I've never disassembled either of my bolts. I use brake cleaner to get the gunk out of the firing pin channel.
Click to expand...
Flitz is a polishing compound that can restore the smooth surface on polished items such as the bolt carrier key and the piston witch if corroded can make it "stickey" and not move freely once you start shooting this rifle again. Also if the bolt wasn't cleaned and got corroded too the pin could get stuck and again cause issues once the rifle is fired. Furthermore by you cleaning your bolt with brake cleaner the chances of this ever happening to you are next to nil cause it sounds like you clean more than just your barrel from time to time & don't wait for the action to seize up on you before ya clean it. This is why I was reccomending a brass brush and Kroil the entire bolt's small parts after it's been sitting over night in Kroil oil. Better to be safe than sorry.
 
You must log in or register to reply here.
Back
Top Bottom