Trying for max loads is just silly. If you want more speed from a 30-06, trade it in for a .300 WM. If you want still more, get a .300 Weatherby.
The primer popping method is, IMHO, really stupid because it depends on the primer hardness. I used to shoot .223 in matches using Winchester cases only. I could get about 10 reloads with the old WSR plated primers but after 4 or 5 with Remington unplated primers, they would fall out. Maximum loads in neither case.
