It's not his actual job, but my brother gets to do this every now and again up in the Northern Territory... They go up every couple of weeks after the heli-mustering pilot shaves enough hours off the company log sheets
It is open range on all ferals... Pigs, dingos, wild dogs, camels
and donkey are all on the hit-list. They use a Rem Model 7 .308 and a Winchester Super X3
I am understandably jealous.