Archer's Advantage Says
Select Bow
Bow Details
Enter peak weight in pounds that you are currently shooting
Take your true draw length (from the nock groove to the pivot point/throat of the grip at full draw) and adding 1.75 inches, representing the average depth of a bow grip
Updating Current Arrow Speed recalculates bow efficiency, resulting in a new ATA Speed.
Updating ATA Speed recalculates bow efficiency, resulting in a new Current Arrow Speed.