I was invited to speak at the Libertarian Scholars Conference this year and gave a short presentation on The Ethics of Anarcho-Capitalism. Here is the video:
Afterwards, Walter Block suggested that instead of describing actions as ethical or unethical, I should describe actions as being legal or illegal under a libertarian system of law. I received similar feedback from others as well.
I think it is important to distinguish between the more general question of whether something is good or bad and the more narrow question of whether a conflict resolution system permits a particular action. Describing the former as ethics and the latter as legality could work but, for now, I’ll stick with morality and ethics. Let me know if you have any other suggestions.