I dont know if point and shoot out to 375 is totally unrealistic. I have tried a 300 yd zero on my 270 and it was "good enough" to point and shoot to 350 yds without going more than 4" high or low the entire way. I didn't keep it like that because the vast majority of my shots are 200 or less, and I didn't like being 4" high from 100-200 yds. I was still amazed that it was possible to go that far without needing any holdover.

You are 100% right about the 500 yd shot, Im calling BS on that one.