Aerodynamic Jump and Bullet Stability

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This project is to find the center of mass of bullets in order to improve testing procedures for Vista Outdoors. By locating the center of mass we find a correlation between an offset center of mass and irregular bullet paths.

Team Name Class Accuracy
Duration Fall 2018 - Spring 2019
Faculty Adviser Dr. Daniel Cordon
Mentor Brandon Hilliard
Client Vista Outdoors
Team Members
  • Dustin Gross
  • Dustan Paul
  • Geoffrey Wood
  • Atticus Zborowski

Problem Definition[edit]


Typical bullet makeup consists of a lead alloy core and a copper alloy jacket. Irregularities in subsurface bullet geometries cause radial dispersion between individual bullets when fired. Current destructive testing methods for bullets do not allow for a direct correlation between measured eccentricities and the radial dispersion of the fired bullets. [If you deconstruct a bullet to measure its eccentricities it is impossible to fire it. Once you fire a bullet its characteristics are modified and original eccentricities are immeasurable.]


A device capable of non-destructive testing for center of mass variance to ± .001 inches for bullet diameters from .224 thru .338 inches. The ideal device could detect variance created by the addition of a cannelure or a plastic tip, have the ability to detect voids between jacket and core, and would detect density variations, or voids, within the lead core.



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We went through the geometry and had wolfram alpha separate out the tipping angle then we used Matlab to solve for the uncertainty.

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Team Information[edit]

Team "Class Acuracy"
Picture Biography Discipline
Dustin Gross
2018 ClassAccuracy DustinPic.jpg
  • Hometown: Bayview Idaho
  • Graduation Date: May 2019
  • Future Goals: Board member of a publically traded company
  • Email:
Mechanical Engineering
Dustan Paul
2018 ClassAccuracy DustanPic.jpg
  • Hometown: Minnesota
  • Graduation Date: May 2019
  • Future Goals: Work in Industry
  • Email:
Mechanical Engineering
Geoffrey Wood
2018 ClassAccuracy GeoffreyPic.jpg
  • Hometown: Rathdrum Idaho
  • Graduation Date: May 2019
  • Future Goals: Build something and help society
Mechanical Engineering
Atticus Zborowski
2018 ClassAccuracy Atticus Bio.jpg
  • Hometown: Boise, Idaho
  • Graduation Date: May 2019
  • Future Goals: Become the smartest human ever and conquer the world...or work in industry.
Mechanical Engineering

Document Archive[edit]

Project Schedule[edit]


Meeting minutes[edit]