Sorting
Life is too short to sort .45 brass. The differences between one brand of brass and another is minimal and has little to no measurable effect on its function. What effect there might be gets lost in a cloud of variables.....
Within the context of a gun that has a variety of moving parts, bullets of various types and weights, alloys, thickness of the bullet jacket or plating, different powders and variations in charge weight, different primers, the press and dies used to load the cartridges, the amount of bell and crimp....the brand of brass is not worth worrying about enough to sort the stuff. If you want to.....hey, go.
Btw....I do not believe that I have ever even seen a piece of Amerc brass. Certainly, I have none.
As to cases with small primer pockets....I do as another poster mentioned....prime it separately and then load it up.
In fact, during the recent craziness and resulting shortages, I bought a few hundred virgin cases from Diamond K and have kept them as a hedge against a time when LPPs are scarce. They remain in their box.
Actually....the SPP brass is a good example of my earlier point about other elements of reloading being as much an influence, if not more, than sorting by headstamp. The small primer loads perform the same as the larger primers....scores haven't changed.