Franchi-
Since I first stoked your anxiety, let me be the first to tell you the truth pertaining to your barrels.
You don't know their condition. Yet.
Drew- be careful posting pics of others failed barrels, as the pics can mislead the original poster, or prompt errant posts referring to someone else's actual barrels. Not those of the OP.
Franchi- get your barrels to someone than can measure them accurately and precisely, and then use that data to compare your barrels to another set from that period.
If you get that data, someone will provide comparison data here and then you can see what you actually have without guessing or anxiety.
I have seen terrible machining marks factory delivered on guns with more than 100 years of service.
All is not lost.
Just your vintage doubles alteration virginity.