So like a nerd I am examining all my reloading manuals and came accross something unusual. The nosler 7 guide calls out gr. water for every load. They use the same case but this measurement varies significantly. At first I assumed it was due to seating depth. But it isn't consistent with this theory. Does anyone have any insight? The nosler book is really nice how it's detailed and calls out specifics. The only thing it leaves out is which bullet the loads are based off of. Bearing surface being what comes to mind regarding this area.