8x56 and Bonanza,
There are a couple of members on the forums here who offer hunts for Buff and other game.
Matt Graham operates in very good Buff country and has been in the game for long enough to know what he is doing.

I do hunts in Queenslands top end for Boar and scrub bull and also do mountain country boar hunting in outback NSW.

What time of year are you thinking of coming?