Your first round impacts: you measure 30 mils left of target and estimate the round to be about 300 meters short. You estimate the distance to your target to be 2500 meters. What is your correction?

Your first round impacts: you measure 30 mils left of target and estimate the round to be about 300 meters short. You estimate the distance to your target to be 2500 meters. What is your correction?

• A. Right 60, Add 400
• B. Left 60, Add 400
• C. Right 30, Add 100
• D. Left 30, Subtract 100

Answer: (A)

When you’re adjusting after a first round, you fix both horizontal error and range error observed from the impact. Horizontal correction: the round landed left of the target by 30 mils. To bring future rounds toward the target, you move the aim to the right. In practice, the correction doubles the observed lateral error, so you adjust deflection to the right by 60 mils. That’s why the correction is Right 60. Range correction: the round was about 300 meters short. To compensate for drop and improve impact on target, you increase the range. The standard adjustment here is to Add 400 meters to the range, yielding Add 400. So the appropriate correction is to shift right by 60 mils and increase the range by 400 meters.

When you’re adjusting after a first round, you fix both horizontal error and range error observed from the impact.

Horizontal correction: the round landed left of the target by 30 mils. To bring future rounds toward the target, you move the aim to the right. In practice, the correction doubles the observed lateral error, so you adjust deflection to the right by 60 mils. That’s why the correction is Right 60.

Range correction: the round was about 300 meters short. To compensate for drop and improve impact on target, you increase the range. The standard adjustment here is to Add 400 meters to the range, yielding Add 400.

So the appropriate correction is to shift right by 60 mils and increase the range by 400 meters.