When boresighting the 60mm and 120mm mortar, what deflection is indexed on the M67 sight?

When boresighting the 60mm and 120mm mortar using the M67 sight, the indexed deflection is set to 3200 mils. This specific value is essential for correctly aligning the mortar to ensure accurate fire on the target.

Boresighting involves adjusting the sighting system so that the line of sight aligns with the trajectory of the projectile once it is fired. By indexing to 3200 mils deflection, operators can ensure that the mortar’s aiming point is calibrated to engage targets effectively. The choice of 3200 mils also relates to standardization practices within artillery operations, ensuring that troops can consistently utilize the same parameters across different units and exercises.

Understanding this setting is critical for mortarmen and helps maintain operational readiness and accuracy during live-fire exercises.