Anyone ever run into this brass?

Don't know where I picked it up, but tried to reload it and discovered it was berdan primed.

Was surprised when I felt "resistance" on sizing, and my RCBS dies punched through the center of the twin holes, without breaking the de-capping pin!

I looked and discovered the twin holes instead of one, With a NEW center hole!

Got to start watching stuff like this more closely!

Virgil B.