Arrow Speed Calculation From IBO

This method is not so precise as Arrow Drop Speed Test, but you don't need to go out and shoot single arrow to estimate your speed.

Bow IBO Speed * fps

Your Draw Length * inches

Your Draw Weight * lbs

Weight Added to String * grains

D-loop with peep = ±20 grains (sum weight of peep, loop, extra weight, etc)

Arrow Weight * grains

Approximate Arrow Speed ... fps

Approximate arrow speed from Bow IBO Speed