"Improved" Cartridge


Standard .30'06 Cartridge

.30'06 "Improved" Cartridge

"Improved" Cartridge - A derivative version of a basic established cartridge, typically whose shoulders have been expanded outward and forward for increased powder capacity for use in a rifle whose chamber has been enlarged accordingly, but whose bore diameter remains unaltered. A concept promoted by P. O. Ackley. "Improved" cartridges are normally shaped by Fireforming a standard case in an "Improved" chamber.




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