One question to ask a gun owner, regardless of political affiliation:
Would you be willing to surrender your firearms if your elected officials did everything else they promised and then ordered you to turn your guns in?
There should only be two possible answers - YES or NO. "That'll never happen" or "That's not nuanced enough" or some other hemming and hawing over the answer gets us where we are today.
None of this is going to fix Schoenthal v Raoul, so maybe we need to relocate our crushed hopes and dreams to a back room thread.