Process varies frm maker to maker, caliber to caliber- with some, it is a separate production line, tighter tolerances, greater QA inspection process. Ammo that flunks a QA inspection may be recycled, or may be routed into the "ordinary" ammo.
Nice thing is knowing what some makers did with their overruns of match ammo- and buying the brand that overruns get sent to. Very good, very cheap.
What we have here is... failure- to communicate.