I tried a 100 yard zero for a while on a coyote rifle but in the end I went back to the 200 yard zero that I'd always used. For most reasonably fast and flat calibers that equates to something in the range of 1.6-1.8 inches high at 100.
For all of the hype we give to different calibers, when you get right down to it there is very little trajectory difference in the first two to three hundred yards for common calibers like the 223, 22-250, 243, 270, 7mm Mag., 30-06. That said considering typical factory weight bullets and a coyote, or larger, sized target. Without looking it up, I think the greatest trajectory difference between those calibers listed is about 2" between the 223 and 22-250 at 300 yards shooting 55 grain bullets.
