4064 is all i have ever used in mine after the wife's uncle had me load his.
It just works and i don't like to spend.money on looking for something i already have,a good shooting 270.
I don't recall ever having a finicky 270 & I've had 7................probably the easiest round I've ever loaded for; 7-08 & 280 Rem are also not finicky either, IME.
