You dial "to" the impact from the point of aim.
That's why we MUST be able to see the impact at all times.
Hence, less junk, as we call it, in the viewfinder is more desireable for "us".
I too have fired many rounds in my life time.
I'm quite sure in your "thousands of rounds" fired, you have missed the bullet impact at 1500 yds or more one time or another unless your eyesight is unbelievably fantastic.
I wish mine was as good.
Deep snow will hide the impact also.
Another reason the LR hunter needs a GOOD spotter with a set of bigeyes behind him. Even in deep snow he can watch the vapor trail of the bullet going in and help the shooter.
In our style, the spotter is the MOST important person on the "team", "NOT" the shooter.