9mm stepped brass, scrap it.

[Dale Gribble]

I can't imagine a standard die with a decap stem, size ball and pin not having problems when it hits that step.

Not counting reduced case capacity and concerns about separation and bullet length.

Just does not seem worth it to me save 3 cents on brass cost, and have additional issues that you don't have in standard brass.

I use a universal decapping die, it wouldn't even notice. And I don't think the expander on my sizing die goes down that far into the brass.