For a start, try seating them .015" from the lands and work in from there in .005" incriments. My factory stainless 1 in 9 twist likes them seated between .002' to .005" off the lands. My velocities are in the 2750 - 2795 fps range with 100 yard accuracy hovering around .500" in fully prepped and neck sized brass. YMMV
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