Only ever used them on deer, but I'll bet you have a hard time finding fans of either for "really big game". Best to read the info on the
Sierra site. They vary not only by jacket thickness and type, but also by core hardness. The 100gr 6mm PH has a nice tapered jacket, but one pretty much disappeared in the chest of a doe at 100 yards out of a .243. Suspect the core is pretty soft. I like all I've used on deer, but they make pretty big holes.
