Alum and steel cartridges

[jlb27537]

Hello, I have a G19 and a G17. Along with sever other brands. I have been using ammo with brass cases.

Question, is there any reason for using only brass cases, or can I use ammo with aluminum or steel cases.

I do not reload.

Thanks Jim

[JR]

Shoot any ammo you like, your pistol has a lifetime warrantee. The only ammunition you need to avoid is the ammo your owners manual SPECIFICALLY identifies.