Here is my favorite target. We used this several months as an internet contest.
Our rules. Print this on an 8.5x11 sheet. Inner black solid circle will be 0.5MOA. Show up at the range and break open a new box of 20 rnds (or grab 20 of your reloads). You have 4 rnds to zero. Then fire 16 rounds only onto the paper from 100 yards. 1 rnd to each target. Break the solid black (no rips) for a point, break the inner white dot for an X (to settle ties).
It will humble most subMOA shooters. I personally consider 12 a pass/fail for a "good" shooter.