I use a Dillon 750. The primer seating is not consistent. Mostly seats between -.001 and +.001.
For my more precision loads, I prime on the Dillon for speed but then run the cases through an old Lee ACP. On the ACP, a rod drops down through the case mouth and bottoms out on the inside bottom of the case which holds the case in place so rim thickness/shell holders are not an issue. On the down stroke, a pin comes up from underneath and seats the primer. They are dead on -.004 every time.
Reseating takes about 2 seconds per case. Unfortunately you can not adjust the seating depth.