Changes
.357 SIG is pronounced ''three fifty-seven SEEG''. .357 SIG is based on [[.40 S&W]], but necked down to accept bullets of the same diameter (.355) as those used in [[9x19mm Parabellum]]. The name was chosen because the ballistic performance of this caliber approaches that of [[.357 Magnum]], but it is designed to be used in semi-automatic pistols.
This caliber may also be known as '''9x22mm''', or simply '''.357''', though it is not encouraged due to the similarly-named [[.357 Magnum]].
= Compatibility =
