How concentric are the VZ2008 barrels?

[czgunner]

Just wondering.

[vblue42]

How concentric is any other barrel in any other rifle? Why do you ask that about this rifle?

[RSR]

Not the barrel, but theading... Believe surefire makes an ~18" or so 7.62 rod for ~$80 that suffices to check suppressors for interference if you don't want  to go to the gunsmith...

[JohnEd]

I would be more concerned with the threading being true to the barrel axis.  I think your concern and "test with rod" is most certainly justified.  Anything you hang on the end of a barrel that gets clipped by a departing bullet will get blasted down range broken.  The threading process MUST employ a "thread guide" to keep it all true if it is not done on a lathe.  You still must check a installed silencer with that "Proof rod".

I own that thread Guide for my Mosin so they are sold.  You can make one by having a Smith turn down and thread some round stock of the dimension of your barrel threaded end and leave @(approx less than) 7.62 x 2 inch turned down  heavily greased stub for insertion into the bore .  Mine cost $20 but  a Smith will need one labor hour plus material.

[machinegunnertim]

I too would like a straight forward answer about the VZ2008 barrels as I have a Surfire 7.62 mini that I'd like to put on it.

Has anyone tested these muzzle threads for being concentric to the bore? Or has anyone successfully suppressed a VZ2008 here?

[RSR]

I don't know if anyone makes a 14x1RH muzzle device for their cans...  So the easiest route would probably be to shorten the barrel slightly, rethread and permanently attach a muzzle device, and then install your can on that...

Thinking shortening the barrel would help alleviate any over pressure issues (mainly meaning over gassed, too forceful cycling leading to premature receiver destruction/cracks), and this way you know your threading is perfect...

I would imagine that Green Mountain (the most likely maker of these barrels) does the threading on their end, so I'm sure it's good.  There was a suppressor thread last week where I posted a vid (believe a mrgunsngear)...  Basically the conclusion was that US Made AK barrels have very minimal threading/suppressor use issues when compared to the European/Russian barrels...

Nevertheless, I'd check it with a rod.

[CitizenPete]

The Kestrel AK suppressor bore is oversized just for these reasons.  It offers a blank muzzle mount that can be swapped as required. The mount screws into the back of the suppressor from the inside -- I had one threaded and milled to 14x1RH at my local gunsmith.  You can use this on a AR or 9mm pistol just by getting a different adapter -- it wont suppress worth beans, but it will attach and function.

In hindsight I wish I would have bought the Kestrel 308 Titanium which has the same features but better sound suppression. It also has an over sized bore hole.

[czgunner]

Bringing back this old thread. I bought a geissele bore check rod (whatever it's called), and my vz is way off. Definitely going to need some fixing before suppressing it.

[JohnEd]

Gunner,

The threaded section must be parallel to the bore and the barrel must be parallel to the bore.

I have replaced three barrels with longer items and had the muzzles threaded on a lathe so I don't have the center problems.  Green Mountain did a good job but they don't retail barrels and the CZ barrel being made to a "order spec" is considered proprietary by GM.  BUT, they made lots for the guys they made them for....like 2008's and 18 inch barrels.  Finding them is the issue.  i searched for a while before locating three at Apex Gun Parts.  They were seconds in some ways but none that couldn't be easily worked around with a lathe.  Important thing to me was the SAMMI chambering and the 307.5 bore in the 16 1/2 inch long barrel.

Thanks for your service.  I am also a vet and VFW Commander.

[czgunner]

Gunner,

The threaded section must be parallel to the bore and the barrel must be parallel to the bore.

I have replaced three barrels with longer items and had the muzzles threaded on a lathe so I don't have the center problems.  Green Mountain did a good job but they don't retail barrels and the CZ barrel being made to a "order spec" is considered proprietary by GM.  BUT, they made lots for the guys they made them for....like 2008's and 18 inch barrels.  Finding them is the issue.  i searched for a while before locating three at Apex Gun Parts.  They were seconds in some ways but none that couldn't be easily worked around with a lathe.  Important thing to me was the SAMMI chambering and the 307.5 bore in the 16 1/2 inch long barrel.

Thanks for your service.  I am also a vet and VFW Commander.

You don't happen to have one of those GM barrels sitting around do you?

[JohnEd]

Gunner,

The bad news is "NO" I don't.  They are all drilled and mounted.  Had to turn the shank to fit the receiver trunion was all.  With .5 thou interference fit they drove on with a plastic no-rebound hammer.  The pins were far more of a nuisance.

FYI:  Get a cobalt bit to drill the barrel pin hole and use the old hole as the guide.  You can use a hand drill.  You need to ream the hole to make it perfectly round.  Dixie Pins will sell you ANY diameter pin you might need if the "original" is too small.  You aren't supposed to reuse the pin but I will bet that happens.  The odds of it being a match regardless of what the package says are not with you.