How tight should the locking nut be during the pre-fire safety check for the cannon?

During the pre-fire safety check for the cannon, the locking nut should be hand-tight. This ensures that the locking mechanism is secure enough to maintain the integrity of the system without being so tight that it could damage components or become stuck, which could complicate operations during subsequent firing or maintenance. Achieving the correct tightness allows the mechanism to function properly and ensures the safety of the crew, particularly in preventing accidental discharges or equipment failure during use. Hand-tight provides a balance between security and maintainability, allowing for adjustments if necessary without risking over-tightening that could potentially impair performance.