Drag Model Standard Shapes

Below are the shapes used to derive the various drag models.  Note that the G1 model bears little resemblance to modern projectiles.  Do you think that a modern bullet has the same aerodynamic properties as the G1 model?  All dimensions given in calibers.


Ingalls & G1


G2- Conical nose shape with radiused blend


G5 G6


G7 (Secant nose) G8 (Secant nose)


This drawing has not been confirmed yet but
is believed to be accurate.  If you have further
information please contact me.




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As far as I know all the information presented above is correct and I have attempted to insure that it is. However, I am not responsible for any errors, omissions, or damages resulting from the use or misuse of this information, nor for you doing something stupid with it. (Don't you hate these disclaimers? So do I, but there are people out there who refuse to be responsible for their own actions and who will sue anybody to make a buck.)

Updated 2009-01-14