Now I know NOTHING about reloading. Nothing. However, what's to stop someone from taking a .410 and downsizing the shell to something like, I don't know uhhhh. a .45LC? (after crimp of course); dropping the powder load accordingly and slapping a rifled slug/000 in there? Does this make sense? Think of those "12g mini slugs". I was pricing 45lc and thought....there must be a better way.