VOLLEY-SHOT

The Dual Shot and Volley Shot feats will let you fire multiple arrows or bolts at a time if you have enough ready in your quiver. Volley is an upgrade of Dual Shot. The number of arrows fired depends on your skill level. The maximum number of arrows is based on your skill level:

Skill               Number of Shots
Dual Shot           skill level / 40
Volley Shot         skill level / 20

So, for example, if you knew Volley with an 85% skill, you'd be able to shoot 85/20, or 4.25 arrows (which would mean most of the time you would fire 4 arrows, but occassionally you'd fire 5.)