Out of interest what bullets were you using and distances did you notice the wind affecting your 204 and the custard arriving.
We used 32gr bullets, V-Max, Varmageddon. They were instant splattery on bunnies, but once they were past a certain range - wind determined how far that was - they were just too sensitive for use on larger varmints like dogs, cats, foxes.
The nature of the wind in the outback on a lightish wind day is often very fickle, in that small pockets of air will blow by very locally. The wind will be nil to very low, then suddenly up for a few seconds or half a minute, and then back down again. If those moving pockets cross your line of sight down range, they are very difficult to spot. They tend to snake around, and we've watched some great examples of this from on top of mine dumps, the wind creating snake-like dust trails across the plain. The little .204 didn't like those conditions at all.
At a guess I'd say past about 250m we'd run into problems? Closer sometimes, for sure. On constant wind days it was fun to target shoot with the .204 Ruger and learn the windage holds, but I wouldn't use it on varmints, as the .223 1:8" was in a different league. With another guess I would say the wind holds for the .223 were roughly half that of the .204, with the 75gr A-Max, and a whole lot less sensitive. But that's kinda stating the obvious.