Greetings from one 12Bravo to another.
I don't think there's any need to beyond 14-1600. Anything beyond that and you're just going through the motions and wasting time and effort. It all about maintaining a constant angle. And the proper angle for the particular tool. I sharpen maybe once a year, year and a half. Other than that I strop EVERY time I pick up a blade, and EVERY time I'm done with it. And sometimes part way through a large project. For my round knives I like a long, flat angle.