Interesting. I am loading 0.20" off right now, 150 grn BT. Maybe I should try seating depth next.Not that you will have the same experience, but my 30-06 shrunk from 0.77 moa at 0.020" jump to 0.4 moa at 0.075" jump with 150 Accubond pushed by 58 gr RL16 lit with WLRM primer.