Starline 357 SIG Brass (Small Pistol primer)
357 SIG brass is basically a .40 S&W brass case 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.
357 SIG brass cannot be formed out of .40 S&W brass case.
Product Information for 357 Starline brass
| Cartridge | 357 Sig |
| Finish | |
| Condition | New |
| Quantity |
|
| Configuration | Bag of 100 (Bulk Packaged) |
| Primed | No |
| Primer Size | Small Pistol |

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From Catalina AZ –
my only brass for 357 sig and I can’t imagine how it could be better. Have reloaded cases over 10 times and they are still going strong.