Exactly- too many things can and do go wrong on long shots. Shooting steel at 600 to 1,000 meters is one thing, but it is not ethical hunting, imho.
Now, that has one caveat, shooting vermin. I have shot a lot of ground squirrels at over 500yards - iirc, 560 was my longest poke. I have seen in type that some guys are able to shoot coyotes at 700yards with custom 204 Rugers and 40gr. bullets. Again, this seems OK, but not big game. Not for me, anyway.