Champion 410 Slug or No slug?

Question
Can I shoot a slug through a full choked barrel on an Champion 410 26" barrel

Answer
You can in theory yes, but I would not.
You really should not fire slugs in anything tighter then Improved Cycle.
In gun that old metal fatigue could have set in.
Plus its an expensive gun to begin with,
Iver Johnson.
I would not recommend anything more than standard velosity (1165 fps)
in a gun that old.
It will also beat you up recoil wise.