Ron,
That is correct. The ammo is Western 7.63 Mauser, but on the side of the box it has "Adapted to Borchardt and Other Automatic Arms". Just my own idea, but I would think it was a little on the hot side for a Borchardt.
I would post a picture, but the old site won't let me into the message boards for an upload.

Johnny,

Go to the old Luger Forum and then down the left frame to the link "Luger Menu Links" (which is almost to the bottom). Click on this and then chose "Message Board" (which is the top link). Then you will be able to upload a pic.

Regards,
wes