For people wondering who he's talking about, it's Nathan Foster. Foster's wound knowledgebase is scant/non-existent when it comes to .223, 6mm, 6.5mm heavy for caliber match bullets used on the sort of large game JVB is talking about. His A-Max stuff is the closest you'll get to ELD-M results for his "research" and he doesn't shoot anything above about 150 pounds with them it seems.
Foster also still relies on energy and prioritizes different things about bullet performance than some here.
6.5 140 grain A-MAX wounding
www.ballisticstudies.com