Have been checking around and because of the necessity of shooting non toxic, it seems appropriate shotshells may be the most difficult aspect of it. My one modern non pump gun is a 16 gauge. With all the attendant issues regarding ammo availability.
But because most non toxic steel shot is aimed at waterfowl hunters, for all gauges it's mostly big loads of big shot. 1 1/4 oz of number 4 kind of thing. And to be clear, US availability is useless. I cannot import US ammo into Canada because of the onerous export laws America has. Same reason we can't get RST or Polywad up here. Too big a headache to export.
