With no intent to disagree with you (I don't), but oft times the law creates their own definitions. Not germane to our "off in the weeds" discussion, but in the state of Florida and in regards to the possession of ammunition by a convicted felon (violent or nonviolent) a piece of brass, a primer, a bullet (cast or jacketed) and powder are each and all considered AMMUNTION. I unfortunately have a child who routinely visits my home who engaged in a nonviolent activity, So I must jump through ridiculous hoops to ensure all of my reloading components are under lock and key except when under my direct control in the highly unlikely chance some over zealous officer or prosecutor decides to make an issue over otherwise innocent stuff lying around. You have no idea what a PIA it is trying to keep track of every component and make sure they are locked away.
Fortunately lead ingots haven't been tagged as ammunition, YET.