400 Spine Arrow Draw Weight - For example, if you're using a. Correct arrow spine is critical for smooth arrow flight and maximum penetration. Web the 400 arrow is lighter, but it’s also weaker, and so tuning could be a real problem.if you want a lighter arrow, stick with the. This spine calculator is intended as a tool to provide a simple point of reference for initial testing. Web as a rule of thumb, use an arrow with a minimum of 5 grains of weight per pound of draw weight.
Web as a rule of thumb, use an arrow with a minimum of 5 grains of weight per pound of draw weight. Web the 400 arrow is lighter, but it’s also weaker, and so tuning could be a real problem.if you want a lighter arrow, stick with the. For example, if you're using a. This spine calculator is intended as a tool to provide a simple point of reference for initial testing. Correct arrow spine is critical for smooth arrow flight and maximum penetration.