The first set has three targets that pop up one at a time (you may have trouble shooting these ones in Sniper mode. In such a case, use the Burst mode). Shoot them in the order: 3, 2, 5 (which means central, left, far right).

If you shoot them before they pass the middle line, the second set appears which includes two targets that pop up together. Shoot them in the order: 4, 1 (which means right, far left).

If you shoot them before they pass the middle line, the third set appears which also includes two targets that pop up together. Shoot them in the order: 1, 5 (which means far left, far right).

If you shoot them before they pass the middle line, the last set appears which includes three targets that pop up together. Shoot them in the order: 3, 2, 4 (which means central, left, right).