SD is more theory today as bullet construction can deflate that number considerably once game his impacted.
Because it was originally intended as a measure for full patch or steel jacketed non expanding bullets, I give it little attention with today's modern expanding bullets which are well designed and or homgeneous which again, deflates the argument when talking penetration.
If you chose Barnes TTSX bullets in your chosen bullet weights, all would suffice, likewise Nosler Accubonds or Partitions in the same or next weight up the scale would also be fine.
John
