Gun Fu (Fallout 4)

Gun Fu is a perk $$

Effects
Increased damage in V.A.T.S. against the second target and beyond.

Ranks
This perk causes each shot in V.A.T.S. on a target after the initial target to do additional damage. Note that additional shots fired at the first target are not affected by the perk.

With the third rank, every hit on the fourth target and beyond, is an automatical critical hit. The effect only applies to additional targets, and queueing actions back and forth across two or more targets does not trigger the effect on the first target.