I wouldn't worry too much about the specific bullet; theres more variation rifle to rifle than bullet to bullet. My Hornady manual doesn't differentiate between types of there own bullets, just lumps all of the same weight together. Published data is all over the map with this cartridge. In the end the rifle will tell you when to quit.
Having said that, if the rifle tells you to quit around 76-77 grains of 7828, or 79-81 grains of H1000 I wouldn't be too surprised.