Cartridge Case
The case, usually brass, holding the propellant charge. Used with Small arms and QF artillery ammunition. QF cases in 1915 could be cleaned and then reloaded up to a maximum of 6 firings with Cordite charges, with the record detailing the "Life of the Case" marked on the base. The limitation on the number of firings was due to the case expanding on firing, having to be "rectified" by turning metal off the lower part, which restored the correct dimensions but progressively weakened the case.
Read more about this topic: List Of British Ordnance Terms
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—G.C. (Georg Christoph)