The DPI shooters used to run these camps that would go for a couple of weeks. There would usually be 4 or 5 machines on the job. Lots of Barramundi fishing and party time. (sensibly conducted of course). There were usually a few extra shooters to carry in rotation. Some were excellent shots, some not so good. I remember one officer i carried north of Mt. Isa, he was such a crook shot from the machine i ended up putting him on the ground and driving the feral cattle to him, fortunately there were only a few to be destroyed. On the big shooting camps in the early days and depending on the area up to 3000 head in one campout were destroyed. Some of the DPI officers would get sores on their shoulders from the constant firing. I heard one story that the Tennant Creek DPP one year bought more 308 rounds than the Australian army.