500 Spine Arrow Draw Weight - Also, we strongly recommend that you use an arrow with at least 5. Web as a rule of thumb, use an arrow with a minimum of 5 grains of weight per pound of draw weight. Web draw weight is factored in, because that determines the amount of force pushing the arrow.every arrow manufacturer has a. This spine calculator is intended as a tool to provide a simple point of reference for initial testing. For example, if you're using a. Web as draw weight increases, so should arrow rigidity (spine).
For example, if you're using a. Web as a rule of thumb, use an arrow with a minimum of 5 grains of weight per pound of draw weight. Web draw weight is factored in, because that determines the amount of force pushing the arrow.every arrow manufacturer has a. This spine calculator is intended as a tool to provide a simple point of reference for initial testing. Also, we strongly recommend that you use an arrow with at least 5. Web as draw weight increases, so should arrow rigidity (spine).