Yes I have shot several dingos. They are considered pests in SA outside of National Parks (and not even there in the South). Southern Australia actually has the longest fence in the world, the "dog fence" which runs from NSW into South Australia and is supposed to keep dingos to the North.

I shot a few dingos/wild dogs in the NT before they were protected.

At one time Western Australia offered a bounty on dingo scalps and may still do.

In SA they can be very difficult to hunt. If there is a dingo loose on a sheep station, it is like a needle in a haystack to find.

Some guys say they are easy to hunt, but spotlighting or shooting from the road in a car isn't hunting. I'm not talking about Marrakai's scrawny dog comment above, but truer desert dingos.

A .222 or .223 is probably a good choice for a pelt, but anything in hand is just as good if not.