Maybe the following point has already been made in this discussion and I missed it. If so, I will repeat it anyway.

Some of us, perhaps many of us, would like to be able to continue to use our classic non-steel compatible doubles like my 12 and 20 gauge Browning Superposeds for upland hunting. Upland type non-steel non-toxic loads suitable for them, particularly the 20, are hard to find and quite expensive when available at all. Most readily available non-steel, non-tox loads are intended for waterfowl and contain relatively heavy loads of large diameter shot, often too hard for classic guns. Non-tox cost and lack of suitable light loads of relatively soft small diameter shot would make continued use of classic doubles for dove hunting especially problematic.

I could always retire my Superposeds and shoot only contemporary guns, but don't look forward to being forced to by politically based decisions.