500m+ is interesting for shooting with a target shooting rig - long, heavy barrel and a big heavy scope, bipod and bag... For hunting at that distance, with a lightweight rifle, it will require significant investment to achieve if you want to do it ethically. Calibre choice will be paramount - plenty of energy to kill, even with marginal shots, every time, at the extreme long end of the range you intend to hunt at is ethically non-negotiable when shooting at living creatures.
Edit: that is my personal point of view. Your benchmark may be different and while I may disagree, at the end of the day, I only have to face my own reflection in the mirror!
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