Zero it for 100 yards and then shoot it at 150 to see where it hits, shoot it at 50 to see where it hits and shoot it at 10 to see where it hits. People look at me like I'm crazy when I say 10 yards, but a lot of game is killed at 10 yards and less with archery and it can happen with firearms. When I was a young man in CO I shot a cow elk at exactly 4 paces with a muzzleloader. Close range hunting is something that happens more often that you would think.

If you know where it hits at a little more and a little less than you expect to be shooting, you'll be better prepared than just shooting at one range.