I don't know, but they sound pretty large caliber, which is what I would expect for going on a safari. Man, after seeing that, if I were to ever hunt big game or go on safari I would want some sort of large caliber semi-auto rifle AND a .50AE or 500sw handgun for a backup just in case. Geez!
I bet that close of a call gets the adrenaline pumping that's for sure!