G'day Carl, and welcome to TradGang. I'm only guessing, but I'd say 40lbs would do the job on most goats, as well as small pigs. But really, I think an Aussie bowhunter is best suited with something between 55lbs and 65lbs, for all game except buffalo (and maybe camel). Arrows should be at least 600 grains, and 2-bladers only, if big boars might be a target. What do you currently shoot?