Shotgun help

[albinodesertrat]

hey guys i have a century international arms, centurion, 12ga o/u. My understanding is that the top barrel is modified and the bottom is improved. it is a lead only shotgun so my question is are there any alternatives that can be shot from lead only guns cause im in a no lead area.

[Retaks]

Anything except for steel. Hevi-shot and all the other substitues for sttel that is non-toxic shot.