JLB,
Certainly we all have our opinions. Personally I error on the safe side. I shoot lower pressure 2.5 in loads in all my vintage doubles. I do this whether is it a Damascus gun with short chambers or a Smith Long range with 3in chambers, or perhaps an NID mag with 3 in chambers. I do this for care and to reduce wear and tear not because I worry about a catastrophic failure.
In that statement I have likely answered my own question-- but cases of $5 boxes of 16 ga shells appeal to the cheap side of me.