[cpttango30]

375 H&H is the minium caliber. I am thinking 458 Lott or 475 A&M Mag. Maybe 460 Weatherby. Though I am really thinking that is one BIG SOB and if you piss him off his foot about bigger than my grape. I would opt for a 20mm http://www.anzioironworks.com/MAG-FED-20MM-RIFLE.htm

http://en.wikipedia.org/wiki/.475_A%26M_Magnum

http://www.africanskyhunting.co.za/t...t-hunting.html