In this video, Rex expounded upon the different factors involved in making corrections for shooting upslope and downslope. Rex discusses true range, actual horizontal range, using angle cosine to calculate AHR, and how to adjust fire for all these things. Rex also explains how true range is still necessary to determine atmospheric corrections such as wind drift, barometric pressure changes and air temperature. All the music, animations, and photography in this video were created by TiborasaurusRex, and unsigned artist. Song Title: Frozen Fate, Minefield Music and Lyrics by: TiborasaurusRex Instrumentation and Vocals by: TiborasaurusRex Recorded by: TiborasaurusRex