Hi Dan
I guide Water Buffalo hunts up in the Northern Teritory for Mick baker of Trophy bowhunts Australia
http://www.trophybowhunts.com.au/ Its a bowhunting Only operation, and we have access to some awesome Buff country.
The Water Buff are really something to hunt with the bow, and right now about the best deal in the world as far as hunting Big Dangerous Game in truly huge wild area's.
The Water Buffalo take some killing, and good preparation needs to go into your set-up.
I always say 70lbs at 28" draw with a total arrow weight 800+grs or more as the min for Buff.
Please feel free to contact Mick through the website if you have any specific questions.
or any questions you think i can help with.
Andy Ivy