What is “Form Factor” and what is it used for? bullet of 0.454 diameter has a Sectional Density value of. Weight in pounds = P (There are 7,000 grains in one pound)Ī 250 gr. The Weight of a bullet, in pounds, is divided by the diameter squared of the bullet. Sectional Density is used in the calculation of a Ballistic Coefficient.īallistic Coefficient = Sectional Density divided by the bullet Form Factor.Sectional Density is a value that relates the ratio of the density, or weight, to the cross-sectional area of a bullet.
What is “Sectional Density” and what is it used for? If you have an interest in creating your own dimensional diagrams, we highly recommend his software (available here.) Thanks goes to Tom for his help with this. We have compiled a list of the most frequently asked questions about reading our dimensional diagrams.
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