20 GA non-toxic Shot Shells for CBC shotgun

[chele]

Hi all,

I am looking for 20GA non-toxic shot shells for a recently acquired Brazilian (CBC) shotgun. The shotgun is old and in great shape so I don't want to damage it by using steel shots.

I'm looking for Rio Bismuth, Kent Tungsten Matrix, Hevi-shot Classic Doubles, NiceShot, or similar options. If you know of any stores that sells these brands (Vancouver Island or the mainland preferable), please let me know.

Thanks!