300BLK Vz58

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Lets talk seriously about this, because I think its an interesting caliber and I like the Vz58 platform. (Also I feel like the black rifle forum gets too much attention and I think there's more than just SKS convos to be had in Red Rifles :p)

What would be necessary to build a Vz58 chambered in 300blk? Could an individual do it for less than $2000? Because that's a pretty good deal when you compare it with 300BLK AR-15s.

Hypothetical:

Take a 7.62x39 Vz58.

That gives us our .30 cal barrel.

Now put a .223 Bolt in it.

Put a CSA Magwell adapter in it. 300blk feeds from pmags right? Could we skip that if it would feed from a CSA .223 polymer mag even?

At this point the only thing we're missing (I think?) is a properly sized chamber.

I don't know much about how the chamber on a Vz58 is constructed. How hard would it be to take to a gunsmith and get one sized/made?

For those with more experience with the round: Would 300blk cycle the piston okay on a Vz rifle?

Is anyone considering this as an interesting project?
 
With a model readily available and proven reliable in 7.62x39mm I personally don't see the desire for a .300BLK given the amount of work it would take.

That being said IF I was going to attempt such a project, I wonder if itd be easier to bore out a 5.56 barrel to .30 cal as opposed to modifying the chamber.
 
You'd need to press out the barrel and replace it with a 30 cal barrel - a 762x39 barrel is a bit roomy for 308 projectiles, you'd also need to adjust the size of the gas port, but other than needing a 100 tonne press, it could be done at home, in your spare time. It would be easier to convince the Czechs or Slovaks that there's a market (good luck)
 
Amongst other things, there'd be very little ballistics gain.

7.62x39 has a bore of .310" to .312" depending on the rifle and 7.62x51 or .308win has a bore of .308"
 
I'm not asking whether there's gains to be had. ;) I'm asking how hard it would be to do.

Not necessarily practical, just playing mad scientist.

Hadn't realized the 7.62x39 barrels were that much larger. :( That makes it a little less straightforward and a lot more expensive for a gunsmith.

I liked the idea of a conversion that could be 90% done by an individual.
 
it will just be easier to take a csa .223 and change the barrel , and put the magwell adapter , anyways it a machinist/gunsmith work and for the gas port someone cant just do it bigger en put a valve to regulate the gas ^^and adjust the thing
 
As a reloaders I see the benefits of going to. 308. Now a. 308 in a. 223 case, that's about ideal if your looking to save costs and have. 30 call fun
 
mlehtovaara said:
Oh, so we are shooting groups, with match accuracy in a semi VZ?

Doesn't seem to be a benefit to me.
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Shooting groups with match accuracy? What does that have to do with bullet selection?

Facts are you can't buy 30 different weights and types of .310" bullets off the shelf at wholesale sports.

You can with .308". Accuracy notwithstanding, .308" is easier to find, and even if you find both .308" and .310"... there will be a wider selection of .308".

How is that NOT a benefit?

I still wouldn't bother changing a VZ58 to .300BLK... but that doesn't mean that .308" bullet selection isn't a benefit if you're a reloader.
 
mlehtovaara said:
What benefit does 300 BLK have over 7.62x39?

Seems a ridiculous waste of money, with no benefits.
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Misanthropist? How did you change your name and boost your post count like that? ;)

Really fireball hit it on the head: "Never underestimate the power of tacit-coolness"

If you could convert a non-restricted rifle to a ###y new caliber with 2 guns and an afternoon's work, that would be worth it in and of itself.
 
Seeing the work that is involved, I'd be more inclined to neck up a 7.62x39 case to .50 and call it 50canuck. That is provided the case is wide enough.
 
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If you were really worried about tacti-coolness you'd stick with a 7.62x39 mm vz58... ammo is so much more common, and on the tacti-cool rating scale of 1-10, that's a 10+ because you can pick up battlefield scavenged ammo from all those ak47 wielding terrorists, y'know... since you're such an operator and all... plus (from the stats I've seen) 7.62x39 mm has more energy (123 grains @ 2400 fps compared to 125 grains @ 2200ish fps). Most of the chinese surplus I've chrony'd is actually around 2450 fps.

What if (?) you're on a super-secret-squirrel mission, and you run out of ammo? You think you're going to find .300BLK ammo laying around? Nope. 7.62x39 mm? Yup. :)

Let's be clear. "recalibering" a vz58 to .300BLK is a flight of fancy, much like paying $2000 to "install" a Type-R badge instead of a turbo kit on your Honda. Don't get me wrong, go ahead and do what you want with your money! Of course, Type-R badges ARE KNOWN to provide an extra 300 horsepower...

Next thread: 6.8 SPC Vz58.
 
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