Good or no good ?

[NORTHOF60]

I've taken classes in acetylene welding and brazing, and it looks as though the action was held with a vise tightened on the action barrel ring, so that would have acted as a heat sink. There's a good chance that some of the brazing material may have entered the receiver ring and also secured the barrel. Has the extractor been removed? If not, it will act like a "key" in the breech face to lock in the barrel. The only way to tell the condition of the barrel for sure, is to remove the barrel and look for signs of heat damage. Sorry, that's my best advise. Hopefully, someone with more experience can provide better or more information.