My method
I use a dummy round, no primer or powder and lube the inside of the neck in a sized brass and seat a bullet long. Then I chamber it in the gun and close the bolt, this seats the bullet touching the lands. Then I eject it and measure the OAL and subtract 5/1000's and adjust die to that OAL. I don't like a lot of "jump" but really can't comment on accuracy gained or lost. But I do want uniformity in shell to given rifle.
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