For cup-and-core bullets, I usually start at 0.010 inches off the lands. I treat Partitions as a cup-and-core bullet. AccuBonds, being bonded, benefit from more of a jump. I usually work with then beginning at 0.050 inches off the lands.
If this is the sort of decision making this senate candidate exhibits at a gun range, why would anyone expect better in the US Senate?
Senate Candidate Wounds Reporter at the Gun Range