Sometimes you hunt areas where you could be shooting 50 yards or 450 and never know where the game will show up, if your not shooting 500+ not much use to dial. Oh BTW while your showing targets.
3 shots at 750 yards, shot prone off a bipod
https://imgur.com/x7as2zg
It ain't hard
And also it's not guessing, +3" at 100 with most modern cartridges =
100 yards, hold lower shoulder,
200 yards hold mid shoulder,
300 yards hold upper shoulder
400 yards hold on hairline

Run the numbers and prove me wrong

If your going through hell, keep on going, don't look back, If your scared don't show it.
You might get out b'fore the devil even knows your there.
(Rodney Atkins)