Awhile back I fired a couple of 180 grain factory "Federal" Accubonds and 180 grain Fusions into an alternating mix of 2-3 inches of wet magazine/ 2-3 inches dry magazine, out of a .300 WSM at 10 yards. The Accubonds made it through about 15 inches and held together fairly well, expanding to just under twice their size. The Fusions traveled about a foot and were quite wider in diameter and looked more disfigured.
I am going to make a new bullet testing contraption (perhaps a 2X10 for the bone and wet newsprint for tissue) this weekend and will pit the "Winchester CT" Accubonds against the Winchester XP3s. I will post results and pictures of recovered bullets this weekend. Sam