After running an OCW and posting the results I will then usually fine tune with seating depth adjustments of .0005" at a time. Once this is complete I will adjust primer depth by .0005" and repost results. Usually takes about 1200 rounds to settle on a load for my 6mm creed then I will rebarrel at 1500 or so rounds............................
.........................just bottom the primer cup out and call it good. Most of mine end up around .005" below flush but that depends on the brass, just make sure they are below flush once bottomed out.