This is a presentation I gave to the Arizona local AFTE (Association of Firearm and Toolmark Examiners) group in February 2015 discussing some of the uses for high speed camera photography of firearms. Specifically, this presentation was based on the Edgertonic camera I have been using for about 8 months. Potential forensic uses of the camera include understanding the operating mechanisms of unusual firearms, determining the origin of class characteristic or individual markings on cartridge cases, understanding terminal impact effects of bullets or other projectiles, and diagnosing malfunctions in firearms.