The original poster asked about old guns and no-tox and what are the viable alternatives to lead. The political angle of lead banning has been discussed here many times in the past and we end up preaching to the choir. And whether it's good or bad science is moot as well because the momentum behind banning lead is increasing. I still want to hear what the effects are of modern steel loads on damascus barrels. That is, do shotcups offer adequate protection of the bore, what is the optimum choke diameter for fixed chokes, are low pressure steel loads effective? That's what I want to know.