Starline 357 SIG - 100 UNPRIMED BRASS CASES PER PACKET
Small Pistol Primer
Basically a .40 S&W necked down to accept a .355" diameter bullet. Most pistols chambered for the .40 S&W can be converted to .357 Sig or complete firearms are available from Sig-Sauer. Cannot be formed out of .40 S&W.
