Perfected disposition in cartridges of shotguns. (Machine-translation by Google Translate, not legally binding)

摘要

Improved arrangement in shotgun cartridges, characterized in that the plug existing inside each cartridge is constituted by a cylindrical body of thermoplastic material that at its base corresponding to the powder cavity, has a hole for the expansive action of the gases in the explosion, while its periphery extends its surface, determining all around it oblique longitudinal fins that define a helical groove and on its face opposite the aforementioned base, determines a central appendage which is coupled to fit a shaped body head that constitutes the projectile; so that in the shot, the block and the projectile leave the barrel together, describing a rotation on its own axis produced by the helical flapping of the latter. (Machine-translation by Google Translate, not legally binding)