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Originally Posted by mariusgmioc
Without knowing precisely the composition and heat treatment of the steel, the effects of aging are unpredictable... no matter how deep and sound is one's knowledge on powder loads and firearms safety. 
And since, contrary to surface oxidation, aging shows little if any signs discernable with the naked eye, most peope are completely unaware of it. |
"Can we use antique guns?"
Of course we can! We can use whatever we want.
Is it safe?! Is it wise?!
Certainly not!
But... this is only my oppinion...
... based on my knowledge...
PPS: I am mechanical engineer.
Studied metallurgy since high school and still learning...
as I am currently working in the field of machining steel and other metals.
https://qr.ae/pG8xES
The comment at the link above touches several issues I did not mention. But there are even a couple more that should be taken into condideration, like the presence of internal micro-cracks resulted from prolonged use.