I like to shoot old guns too. I just don't like to break them.
Horses for courses and all.
I don't like to alter them either (unless they are already broken)
so adding choke tubes is a no-no to me as well.
So, to me anyway, taking a vintage shotgun, and spending a bunch of money to make it into what it is not, and was never intended to be, and then shoot steel shot through it, isn't interesting.
It's just an opinion of course.

Out there doing it best I can.