Trash it. It is no longer in production but it pops up once in a while. It can be re-loaded but it has a tendency to separate right at the ledge half way inside the case. The problem with the "stepped" cases is that they do not split lengthwise but the separate at the step leaving the top half of the case fire formed to the chamber. It is a royal PIA to get that out of the chamber with a set of dental tools.
Other headstamps that had it were FN, AmmoLand, and Xtreme.