It's generally suggested that steel shot is manageable in a gun with barrels NOT made for steel with chokes opened at least to modified. However, I think that is generally referring to 12 gauge.

What is the collective wisdom here regarding safe choke dimensions for steel in a 16 gauge barrel. Modified still, or should it be more open? My concern at this point is strictly barrel bulge. Also not concerned at this point with pressure or recoil issues. Simply likelihood of barrel bulge.

The world cries out for such: he is needed & needed badly- the man who can carry a message to Garcia