How To Calculate Bow Draw Length - Web when the measurement is found (in inches), divide that number by 2.5 and the resulting number will be proper draw length. For instance, my wingspan is 72.75. For example, if you have a wingspan of 70.
For instance, my wingspan is 72.75. Web when the measurement is found (in inches), divide that number by 2.5 and the resulting number will be proper draw length. For example, if you have a wingspan of 70.