In the book The Parker Story the Remington vintage specification sheets on pages 164 to 169 call for a chamber 1/8-inch shorter than the shell for which it is intended. Also in the 1930's there were a couple of articles by A.P. Curtis in The American Rifleman (July 1936 and March 1938) on the virtue of short chambers. A.P. Curtis had several decades in the industry by that time, having worked at Parker Bros., Ithaca Gun Co., Hunter Arms Co. and Marlin.
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