What does "on the target" mean to you? I would be comfortable getting on the trigger in 1-4 below. I would not start pressing the trigger for 5. How about you?
1. Stable sight picture, perfect alignment, center of target.
2. Wobbly sight picture, ok alignment, near center of target.
3. Flash sight picture, on target, away from the edges.
4. No sight picture, on target, away from the edges.
5. No sight picture probably not on target.