I like to zero out beyond 100; the trajectory I'm getting is .75" high at 50yds, 1.5 - 2" at 100, and back to .75" at 200. That puts my zero around 235 yards. As flat-shooting as the .223 is with such a small bullet, it gives me Minute Of Varmint out to about 265yards. But, that's just my preference. I'm thinking a 100 yard zero would give you about 1" or slightly more drop at 200.