Rex reviews the effects of barometric pressure and altitude on the trajectory of a bullet. In order to precisely correct for the changes in atmospheric density at different elevations, the shooter must first make an accurate determination of what the B.P. is at his location. Rex also goes over the use of cell phones for obtaining barometric data. All the music, animations, and photography in this video were created by TiborasaurusRex, and unsigned artist. Song Title: Particle Jam, Mine Field Music and Lyrics by: TiborasaurusRex Instrumentation and Vocals by: TiborasaurusRex Recorded by: TiborasaurusRex