Just sitting here re-reading and old magizine I bought several years ago (December 1964 issue of Archery World) and though I would post. In this issue Bob Swinehart tells of his adventure in Africa when he took a bull elephant with bow and arrow. He was using a 100# bow, solid glass shafts (look to be large diameter) that were 40" long overall, and long, narrow broadheads (look to be Howard Hills or a similar style). One thing about this article caught my attention for the first time, although I've read it before. He mentions taking a Cape buffalo with a 75# Ben Pearson recurve. He also mentions that although the buffalo is tough, it doesn't compare to the elephant, in which he got nearly 30 inches of penetration in.
I wish it gave more details on the equipment, but if nothing else it gives me a lot more confidence in my bow when I go for the water buffalo. If an old Ben Pearson will do the trick on an elephant at 100#, I believe my Crusader will be more than enough for the buff at 85#. Yeah, it's still a ways off--I'm gonna' get an ulcer from the anticipation!
Chad