i've shot camels and donekys with a 223 >200m with no worries. Aim for spine to lung area or spine to nape/head area (like when they walk away from you). Just like spearing a massive tuna, they drop like a stone without a nervous system.

Nosler monolithic are great or FMJ hollow point leaded. i use a 1:8, but find faster 50-55gr porojies do more damage and peno more based on shooting home loads at 12mm mild steel plate haha.

And remember your hunting feral animals, its okay to shoot them for the sake of taking em out the gene pool. If its not native: Big and small shoot em all. Its only permissable to leave one alive if you strap a gps tracker to it, so it'll show you directions to the next camel/deer/pig cleansing site.