Cartridge Case Ejection Pattern Testing
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          The cartridge case ejection pattern test is used to define how a particular firearm arrays the fired cartridges cases ejected from it during the firing process under specific test conditions. Such tests are usually conducted on a firing range (as shown) under a specific set of conditions. However, it may be necessary in certain cases to conduct the test under conditions as close as possible to the conditions at the actual shooting scene. Such conditions as gun height, angle, surface the cartridge cases land on, etc. may have great bearing upon the pattern displayed.