Coonan .357 Magnum Automatic, best of both worlds.
Coonan .357 Magnum Automatic, best of both worlds. Dan Coonan, American gun designer, developed the Coonan pistol, chambered in .357 Magnum around 1977. Initially he designed a working magazine, to feed a rimmed case designed for a revolver. When he was satisfied that the magazine worked, Dan began to build a prototype using standard Government…
