Play 17 short rounds, each with a different sens. You never see which one, so only your aim decides. At the end you get the sens you actually hit best with.
About 8 minutes. 25s rounds, one target at a time.
Aim like in a match: fast and accurate. Speed and precision both count.
It learns as you play. Each next sens is picked from your results so far. Some rounds feel off, keep going.