CZ 858 barrel.

I'm sure there's a few kicking around since wolverine had to,part out the last batch.....I'm sure some received there's before John put the breaks to the parts kits!!!!
 
Removing the barrel is going to be the tricky part. You'll need a press that you can set up with an offset, as you can't just press straight down on it, without the receiver back getting in the way. Don't forget that they're pinned, and that pin will need to be punched, or drilled out.

I have been told, by people who have done it, that, the new barrel can be installed without a press. Sticking the barrel in dry ice, and heating the receiver to about 7-800 degrees, the two can (in ideal conditions) be pressed into each other. Just be sure you have it set up perfectly as you'll only have one shot at it, and won't be able to push it further, back it out, or rotate after it's in there.
 
Ok, now I'm curious.

I got to shoot a friend's CZ858 at the range about a month ago. It shot really well (once I got used to the sights) and there's very little felt recoil despite a bit of a "snap" on the muzzle.

I've been mulling over getting one myself but now I'm wondering... what is the lifespan of the barrel? Say, in number of rounds of non-corrosive ammo. I wouldn't be using it for hunting, I'd shooting range zombies in the eye by the hundreds, if not thousands, so I'd like the barrel to have some kind of useful life to it :)
 
Ghost Snake said:
Ok, now I'm curious.

I got to shoot a friend's CZ858 at the range about a month ago. It shot really well (once I got used to the sights) and there's very little felt recoil despite a bit of a "snap" on the muzzle.

I've been mulling over getting one myself but now I'm wondering... what is the lifespan of the barrel? Say, in number of rounds of non-corrosive ammo. I wouldn't be using it for hunting, I'd shooting range zombies in the eye by the hundreds, if not thousands, so I'd like the barrel to have some kind of useful life to it :)
Click to expand...

well CZ858 barrel is not chrome lined , but the CSA one is , lifespan is probably more than you will ever be able to put round in it , since 7.62x39mm is a slow rounds ,
 
Frost Cracked said:
Removing the barrel is going to be the tricky part. You'll need a press that you can set up with an offset, as you can't just press straight down on it, without the receiver back getting in the way. Don't forget that they're pinned, and that pin will need to be punched, or drilled out.

I have been told, by people who have done it, that, the new barrel can be installed without a press. Sticking the barrel in dry ice, and heating the receiver to about 7-800 degrees, the two can (in ideal conditions) be pressed into each other. Just be sure you have it set up perfectly as you'll only have one shot at it, and won't be able to push it further, back it out, or rotate after it's in there.
Click to expand...

DO NOT heat the reciver to 700 - 800 you will mess with the heat treatment! 500 f is as hot as I'd go.
 
Frost Cracked said:
Removing the barrel is going to be the tricky part. You'll need a press that you can set up with an offset, as you can't just press straight down on it, without the receiver back getting in the way. Don't forget that they're pinned, and that pin will need to be punched, or drilled out.

I have been told, by people who have done it, that, the new barrel can be installed without a press. Sticking the barrel in dry ice, and heating the receiver to about 7-800 degrees, the two can (in ideal conditions) be pressed into each other. Just be sure you have it set up perfectly as you'll only have one shot at it, and won't be able to push it further, back it out, or rotate after it's in there.
Click to expand...

Removing barrel is easy part, pushing it back without inflicting stress onto receiver will require special contraption to be designed and produced.
 
Ghost Snake said:
Ok, now I'm curious.

I got to shoot a friend's CZ858 at the range about a month ago. It shot really well (once I got used to the sights) and there's very little felt recoil despite a bit of a "snap" on the muzzle.

I've been mulling over getting one myself but now I'm wondering... what is the lifespan of the barrel? Say, in number of rounds of non-corrosive ammo. I wouldn't be using it for hunting, I'd shooting range zombies in the eye by the hundreds, if not thousands, so I'd like the barrel to have some kind of useful life to it :)
Click to expand...

Dad003 said:
well CZ858 barrel is not chrome lined , but the CSA one is , lifespan is probably more than you will ever be able to put round in it , since 7.62x39mm is a slow rounds ,
Click to expand...

The barrel should last well past 20K rounds. Realistically, it would be hard to wear it out, as x39 isn't a fast round. Shooting corrosive ammo isn't an issue, so long as you remember to clean it after a range session.

Muzzle flip can be reduced to near zero with a decent muzzle brake. I tested out a few a while back, and all worked very well (some slightly more "very well" than others - but all were effective.)

The first string below is no brake (just the thread protector), second string with a flash hider (so, not a brake, but made a slight difference), then a "special forces" brake, an AK-74 style brake, and then two different modern style brakes. The four different brakes all kept the pointy end nice and flat, even when squeezing rounds off fast.

 
grelmar said:
...
Muzzle flip can be reduced to near zero with a decent muzzle brake. I tested out a few a while back, and all worked very well (some slightly more "very well" than others - but all were effective.)
Click to expand...

Agreed.
With the right setup, almost no muzzle rise at all.

 
Ghost Snake said:
Ok, now I'm curious.

I got to shoot a friend's CZ858 at the range about a month ago. It shot really well (once I got used to the sights) and there's very little felt recoil despite a bit of a "snap" on the muzzle.

I've been mulling over getting one myself but now I'm wondering... what is the lifespan of the barrel? Say, in number of rounds of non-corrosive ammo. I wouldn't be using it for hunting, I'd shooting range zombies in the eye by the hundreds, if not thousands, so I'd like the barrel to have some kind of useful life to it :)
Click to expand...

The 858 features a non-chrome lined barrel. Non-chrome lined barrels in zippier cartridges typically last about 5K if I recall correctly. In 7.62x39, my personal guestimate would be 7000-10 000. A chrome lined barrel, like the ones found on the CSA Vz58, should last a very long time. CSA uses Lothar Walther barrels made of 4340 steel, which is typically used for machine gun barrels, and I *think* it's cold hammer forged. CHF+machine gun steel+chrome lining means it should last a very, very, very long time. AK's can last a long time. Regularguy Training on youtube has a MAC 90 Chinese AK that still has a good barrel post 19 000 rounds, and it is chrome lined, but I don't know if it's CHF or the barrel steel. Reid Henrichs has talked about putting 100 000 rounds per year through his AK's. I think the CSA should last to at least 19 000, maybe longer. EDIT: Definitely longer, his AK's barrel wasn't worn out at like 25 000. CHF and chrome lining and machine gun steel is a winning combination.
 
p.Rundle said:
EDIT: Definitely longer, his AK's barrel wasn't worn out at like 25 000. CHF and chrome lining and machine gun steel is a winning combination.
Click to expand...

That was the reason for my question. Considering the relative hassle discussed here of putting a new barrel on the 858 compared to a pistol or an AR, I would hope the 858 barrels would last a decent number of shots. I just recently replaced the recoil spring on my Kimber Stainless II because I had put 5000 rounds through it. I checked the bore after cleaning it last night, and the rifling doesn't really look any different from when it was brand new. The grooves on my CZ 75 are so deep it looks like the start of a James Bond movie :) . I would hope CZ's rifle barrels would be similar.
 
p.Rundle said:
The 858 features a non-chrome lined barrel. Non-chrome lined barrels in zippier cartridges typically last about 5K if I recall correctly. In 7.62x39, my personal guestimate would be 7000-10 000. A chrome lined barrel, like the ones found on the CSA Vz58, should last a very long time. CSA uses Lothar Walther barrels made of 4340 steel, which is typically used for machine gun barrels, and I *think* it's cold hammer forged. CHF+machine gun steel+chrome lining means it should last a very, very, very long time. AK's can last a long time. Regularguy Training on youtube has a MAC 90 Chinese AK that still has a good barrel post 19 000 rounds, and it is chrome lined, but I don't know if it's CHF or the barrel steel. Reid Henrichs has talked about putting 100 000 rounds per year through his AK's. I think the CSA should last to at least 19 000, maybe longer. EDIT: Definitely longer, his AK's barrel wasn't worn out at like 25 000. CHF and chrome lining and machine gun steel is a winning combination.
Click to expand...

Any info on the type of steel used in the CZ 858 barrels, by comparison?
 
Ghost Snake said:
That was the reason for my question. Considering the relative hassle discussed here of putting a new barrel on the 858 compared to a pistol or an AR, I would hope the 858 barrels would last a decent number of shots. I just recently replaced the recoil spring on my Kimber Stainless II because I had put 5000 rounds through it. I checked the bore after cleaning it last night, and the rifling doesn't really look any different from when it was brand new. The grooves on my CZ 75 are so deep it looks like the start of a James Bond movie :) . I would hope CZ's rifle barrels would be similar.
Click to expand...
A rifle's round is going so much faster than a handgun that it will likely wear out faster than said handgun would. You also have a .45, which is slow and good on barrel life. You should consider getting a CSA for barrel longevity, especially if you're on the humid coast because chrome lining will help.
Frost Cracked said:
Any info on the type of steel used in the CZ 858 barrels, by comparison?
Click to expand...
I have no idea. I think the 18.5" are only made for the Canadian market and we have very little competition and so the manufacturers often don't give a lot of details, they just say "here, we know you'll eat it up." You could contact them if you want to know the details, I'm somewhat curious too.
Edit: I know they ain't chrome lined, which is a helluva strike against them in my books
 
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