I really don't understand why you guys are still arguing about using .30-06 brass.
There is no point in the modern world.
Nosler, Hornady, Winchester, Remington, Lapua, PPU, S&B, and Norma make brass. It is not difficult to obtain.
Graf's, for example, nearly always has
PPU in stock.
They currently only have
Nosler, but PPU is very easy to obtain most of the time.
Sometimes. Sometimes, it is easier to get loaded ammo.
But you still get usable brass.