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centre-fire

British  

adjective

  1. (of a cartridge) having the primer in the centre of the base

  2. (of a firearm) adapted for such cartridges

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012