In these days of high priced shot, we shoot anything we can get. Old bags, very very old bags of chilled shot with white oxide will do for our weekly old guys Wednesday shooting.
But when I really want to tell my inner self that I am serious, I shoot Winchester AA or my reloads with the best hard shot and AA components.
I know that it is a bit of mumbo jumbo at my humble level of competition, but confidence is an element in good shooting.
I really appreciate the table of shot hardness. This year Neil Winston's testing put Browning competition loads at the very top of the shot hardness and performance scale, I believe.