SVT-40 Barrel Print?

[tobnpr]

Pretty sure this one's a stumper- looking for a print/specs of the barrel for an SVT-40.
From what I've been able to glean online the machining/contouring looks doable, but need dimensions, gas port specs, etc.

On the off-chance someone here has rebarreled one, feedback appreciated.

 

[akajun]

No help on the specs but iirc has a fluted chamber critical to operation. One guy on pm said he made one and cut the flutes on his lathe using a homade “ boring bar” and the carriage on his lathe as a shaper.

 

[tobnpr]

No help on the specs but iirc has a fluted chamber critical to operation. One guy on pm said he made one and cut the flutes on his lathe using a homade “ boring bar” and the carriage on his lathe as a shaper.

Thanks, that's an odd one; I was aware of this only on certain delayed roller blow-back firearms.
Wonder why the SVT, I thought it was very similar to the SKS- guess it must be due to the higher pressure of the 54R round.

I'll keep digging on this, maybe non-fluted might function with brass vs the heavy-wall steel cased it was designed for(?).

 

[akajun]

Found a thread but not the one with the pics
Guy used a cheap hss boring bar with a hss but ground to cut the flutes

SVT-40 chamber flutes

Alright a friend of mine inquired about re-barreling his svt-40, I told him I would look into it and during my research trying to find a replacement barrel I discovered that not only are the barrels incredibly overpriced (if you can even find them) but the chamber is fluted in the shoulder and...

www.practicalmachinist.com

Read up , shows the number and depth of the flutes

 

[Twdmar]

I just watched an Anvil gunsmithing video on this rifle the other day. He didn't pull the barrel so no insight there but he did a tear down of much of it, if that may help. The rifle in the video had a case stuck in the chamber with the case head ripped off. The case he pulled didn't have any flute marks on it like a G3, I believe they are ahead of the neck to allow a little gas to flow around and push out the case.