You must contact the maker for a correct answer.
If it was made to shoot steel shot and has interchangeable chokes.
NO!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Do not shoot steel shot in this weapon.
no
That will depend on whether the choke tube is rated for steel shot or not.
If it was designed for it, yes. If not, no.
Depends on what it is choked and what load you want to shoot.
No. If it is marked 'lead only' then it must have been manufactured after steel shot was available but not designed to withstand the additional friction from steel shot.
That will depend on whether the choke tube is rated for steel shot or not.
Depends on when it was made.
Consult your owner's manual
Not recommended
No.