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Old 01-09-2018, 06:12 PM   #1
winston
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Default Saiga 223 SBR Question(s)

I'm going to cut it down to 12.5"

What size does the barrel gas port need to be for reliable function..?
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Old 01-09-2018, 06:19 PM   #2
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It should be the same military ammo if it is the 16 inco barrel.

That should be 0-067".

The 20 inch 223 Saiga barrel likely has a smaller gas port, but maybe not.

Some early Saiga's have a larger gas port for commercial ammo but those aren't common.

Don't make those any larger.
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Old 01-09-2018, 06:27 PM   #3
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Quote:
Originally Posted by allesennogwat View Post
It should be the same "WITH" military ammo.
Is this what you meant..?

I typically only run the Russian steel cased stuff, Tula, Wolf, etc..
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Last edited by winston; 01-09-2018 at 06:42 PM.
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Old 01-09-2018, 06:29 PM   #4
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It's the 16.25"

Thank you sir
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Old 01-09-2018, 06:30 PM   #5
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Quote:
Originally Posted by winston View Post
Is this what you meant..?

I typically only run the Russian steel cases stuff, Tula, Wolf, etc..
Yes, typo.

The military gas port for 12 inch and 16 inch barrels is 0.067".

Some Saiga's have military gas ports. Fewer have military rifling.

Some Saiga's have a commercial ammo gas port that is larger, while some 20 inch barrels have a smaller gas port.
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Old 01-09-2018, 06:31 PM   #6
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The Barnaul and Wolf by Barnaul ammo is closer to working right than Tulammo 223 ammo.
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Old 01-09-2018, 06:36 PM   #7
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We used to open the gas port to 0.076" for Russian steel case ammo.

The more recent 62 FMJ ammo is better than the old stuff.

Tula used to make for Wolf and Barnaul didn't offer 62 grain FMJ, only hollow points.

Now Barnaul make 62 grainj FMJ ammo for Wolf and Colt.

Barnaul doesn't list it as a product, but there is some available in Barnaul boxes.
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Old 01-09-2018, 06:39 PM   #8
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Really appreciate the info, thanks again.
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Old 01-11-2018, 10:51 PM   #9
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Does anyone know what the barrel journal diameter is under the gas block of a 223 saiga..?
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Old 01-12-2018, 03:44 AM   #10
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I'm also looking for a handguard retainer with the lever for my .223 Saiga.

Any suggestions..?

I found several for 7.62 AK's and I'm not sure they are compatible.
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Old 01-12-2018, 01:22 PM   #11
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Quote:
Originally Posted by winston View Post
I'm also looking for a handguard retainer with the lever for my .223 Saiga.

Any suggestions..?

I found several for 7.62 AK's and I'm not sure they are compatible.

same as russian ak74 maybe ?
- akm isn't much larger (0.668 vs 0.670)

https://i.pinimg.com/564x/0e/90/61/0...f38f441006.jpg
^
*some have pointed out that dims on this image isn't 100% correct

ask Rforbus, to see if he has a bbl profile dwg for saiga 223
https://robertforbus.com/wp-content/...k74_545x39.pdf
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Old 01-12-2018, 02:19 PM   #12
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Quote:
Originally Posted by Lane_H View Post
same as russian ak74 maybe ?
- akm isn't much larger (0.668 vs 0.670)

https://i.pinimg.com/564x/0e/90/61/0...f38f441006.jpg
^
*some have pointed out that dims on this image isn't 100% correct

ask Rforbus, to see if he has a bbl profile dwg for saiga 223
https://robertforbus.com/wp-content/...k74_545x39.pdf
Great info, thank you sir..!
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Old 01-12-2018, 04:47 PM   #13
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Is the barrel machined for the hand guard retainer?


Some are and some aren't.
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Old 01-12-2018, 04:58 PM   #14
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Quote:
Originally Posted by allesennogwat View Post
Is the barrel machined for the hand guard retainer?


Some are and some aren't.
It has the channels down each side, but no retainer lever slot.
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Old 01-12-2018, 06:15 PM   #15
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Quote:
Originally Posted by winston View Post
It has the channels down each side, but no retainer lever slot.
Then it is machined for one.

Some don't have the slots in them.
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Old 01-12-2018, 06:16 PM   #16
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If you get an AK-74 rear sight base, you could just use a shortened AK-Builder barrel and keep the Saiga barrel original.
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Old 01-13-2018, 03:10 AM   #17
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You're the genuine wAKipedia
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Old 01-13-2018, 03:15 AM   #18
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Quote:
Originally Posted by allesennogwat View Post
If you get an AK-74 rear sight base, you could just use a shortened AK-Builder barrel and keep the Saiga barrel original.
I feel ya', but this gun was always meant to be a fast and furious competition gun. It was intended for a chop the day I bought it, just waiting for the stamp to show up.

I have a Romy G kit that I was considering chopping to build a 10.5" gun, but I can't bring myself to mutilate a genuine military collectable.

So I will build an SBR Frankengun in 7.62 from the ground up.
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Old 01-14-2018, 03:02 PM   #19
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Quote:
Originally Posted by winston View Post
I feel ya', but this gun was always meant to be a fast and furious competition gun. It was intended for a chop the day I bought it, just waiting for the stamp to show up.

I have a Romy G kit that I was considering chopping to build a 10.5" gun, but I can't bring myself to mutilate a genuine military collectable.

So I will build an SBR Frankengun in 7.62 from the ground up.
It still easy enough to swap the barrel.

No reason to cut up and wear out the original barrel.

There aren't going to be any more Saiga barrels.
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Old 01-14-2018, 03:29 PM   #20
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Sorry to high jack, I'm building a m72 in 556 in standard m72 config (except m76 RSB), should I do a .067 or smaller port you think?
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Old 01-14-2018, 04:57 PM   #21
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Quote:
Originally Posted by Ak-a-Holic View Post
Sorry to high jack, I'm building a m72 in 556 in standard m72 config (except m76 RSB), should I do a .067 or smaller port you think?
A long M72 length barrel?

Maybe slightly smaller.

After a certain point it doesn't make much difference with the small bore or small port cartridges.

7.62x39 has a very different gas port in the RPK, but it starts out larger.

In 308 the difference is 0,058" 16 inch and 0.054" in 20 or 22 inch barrels.

You might try 0.0625" or maybe 0.060" for a 5.56 RPK.

After 18 inches, the gas for 5.56 doesn't change much.

Heavy match bullets in AR15's do, but ammo for an AK isn't likely to make much difference.

Heavy bullets have a bit of difference between 18" and 20" but not a whole lot.

Most all of the 5.56 AK's, short barrel, 16" barrel, Krinkov and 18" inch barrels have pretty much the same gas ports.

The RPK is one that may require something slightly smaller.

An M72 gas block allows drilling larger while installed, so start out small.

Maybe even smaller than 0.060", but I doubt much smaller will work well.

I would guess 0.0625" would be about right, but you can start smaller.
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