Influence of Berdan and Boxer Primer Spit-Hole Diameter on 7.62-mm Cartridge Performance

Report No. ARL-TR-6968
Authors: John J. Ritter
Date/Pages: June 2014; 21 pages
Abstract: The U.S. Army Research Laboratory (ARL) conducted a study to examine the effects of varying a small caliber (7.62 mm) cartridge's spit-hole on the interior and exterior ballistic performance of the cartridge. Along with standard Boxer primers, a Berdan style primer configuration is evaluated. Performance metrics evaluated were cartridge pressure, primer pocket pressure, and muzzle velocity.
Distribution: Approved for public release
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Last Update / Reviewed: June 1, 2014