Since SAAMI is a voluntary industry organization, there could be a large primer spec if Federal wanted it."There is no SAAMI spec for primer size for the .45 ACP. To keep costs down we are loading a small pistol primer in the .45 ACP because performance from the large primer to the small primer is the same."
Whatever material cost you save on the primer, you'll make up with the additional brass in the case.
Are you implying the manufacturer does not know how to control or cost out his raw materials used in the manufacture of his product?
SP primers use less brass, but the SPP cases use more brass, so it's a wash.
So they save a penny on a box of ammo, so what?
For you and me? You actually care that Federal is pocketing the five cents? You think they owe you the difference?