RE: best broadhead for penetration? 2 blade fixed?
I would sure think the Magnus Stinger would work well . . . but I remember an Outdoor Channel segment awhile back where Uncle Ted chased one around for the better part of a morning waiting for it to expire after putting a pretty good shot on it with a Magnus.
I think I would go with the G5 Montec on this one. About as tough as they get. More blades. Or maybe the Muzzy Phantom. Or G5 Striker. And I would most likely use an Easton Axis FMJ shaft. They help penetration as well.