The parallax formula is not a Down Under secret. I first encountered it during a visit to the Leupold factory years ago, but that was back when their tech and PR guys were more technically oriented.
As opposed to being shucking and jiving experts?
I think I’m about through with any scope over 10x. That seems to be the place where they get iffy with eye-relief, eyebox etc. maybe I need to spend more money on them….
