I don't want steel cased ammo...

You won't get steel cased ammo unless you specifically select it on a caliber that has that as an option. 

For example, here are the options available for 9mm Practice:

If you select Steel Case then you will ONLY get steel case. If you select, "No Thanks, Skip this Option" then you will get regular 9mm FMJ Brass or Aluminum cased ammo.