During the impact portion of a Registration, what are the automatic refinement corrections for the following cases: nearest to the first fired rounds, equidistant between two sets, or nearer the far end?

• A. No refinement, Add or Drop 10, Add or Drop 20
• B. No refinement, Add or Drop 5, Add or Drop 15
• C. Add or Drop 10, No refinement, Add or Drop 20
• D. No refinement, Add or Drop 10, Add or Drop 30

Answer: (A)

Automatic refinement corrections in the impact portion of a Registration are a quick way to adjust for systematic drift between observed hits and the intended target. If the hits are closest to the first fired rounds, the current data is already centered well enough, so no refinement is applied. When the impact pattern sits exactly halfway between two reference points, that half-step misalignment is corrected with a small shift—Add or Drop 10. If the pattern is leaning toward the far end, a larger adjustment is needed, so Add or Drop 20 is applied to bring the mean impact back toward the target. This combination—no refinement, then a 10-meter tweak, then a 20-meter tweak—matches the described automatic refinements.