There is no answer as asked. I start with a square mark on the rifeling and back up. 005 at a time until it will repeat with groups in the zeros and ones. Once you find a sweet spot now fine tune either direction .001 at a time. If the 2nd shot does not go through the first hole I don't bother with the third. If you shoot the same bullet powder combination done with the same reamer by a good machinest you will usually find subsequent barrels will be very close to the first as far as a load.I plan to try H4350 & Varget but I'm curious what others are finding as their best seating depth,just touching,jammed, or jumped & approximately how far into the lands or how far off the lands?
Thanks,
Alleycat