Yep it can be done. Max weight is about 150-160 grain though. This case was sized in an experimental air operated press.
With that much solid brass in the base it would be an interesting bullet. The thin walls of the 9mm would open up drasticly at first then the solid base would just keep going I bet.
Got the bullets next to a standard 9mm case to show size before and after.
Good shooting,
BT Sniper