What could indicate a need for bore sighting?

Bore sighting is a crucial procedure that ensures the optical sights or scopes on a weapon are aligned properly with its bore. This alignment is vital for accuracy and effectiveness during firing. The presence of deflection and elevation errors directly signals that the weapon may not be firing accurately, meaning the projectiles are not hitting the intended target due to misalignment between the sights and the bore.

When there are significant deflection (horizontal alignment issues) and elevation (vertical alignment issues) errors, it implies that the sights may need to be adjusted or that there is a potential issue with the weapon's setup. Therefore, observing these errors may prompt the operator to perform bore sighting to rectify these misalignments and ensure combat effectiveness.

Other options, such as changes in wind conditions, misfires, or new types of ammunition, can impact shooting performance but do not specifically necessitate bore sighting as a corrective action. Wind conditions affect the trajectory but do not indicate a need for adjusting the sights. Misfires suggest a different issue, often related to the ammunition or mechanics of the firearm itself. New types of ammunition can also affect ballistics but typically would not require the sights to be adjusted unless they significantly alter the shooting dynamics, which is not always the case