[cubsfan]

FrankenMauser,
I also see on other forums a reference to the CBC headstamp as being from Magtech. But when I go to the International Ammunition Association web site (the link I provided), it shows this:

CBC Companhia Brasileira de Cartuchos, Avenida Industrial No 3330, Santo Andre, Estado de Sâo Paulo, Brazil (ca'1997: Av Humberto de Compos 3220, 09400 000 Ribeirao Pires SP, Brazil) 1

So, I'm guessing that this company is the manufacturer for some of the ammo that Magtech boxes.