I found the Croatian company “BERTA PROJEKT d.o.o.” which is making sniper rifles and AP/API ammunition (to the little I have seen probably something along the Anthena design).
Here an entry on the industrial design (what ever that is):
Calibers lisetd by them are:
Here the .338LM:
i110.photobucket.com/albums/n83/ … 9ad059.jpg
I was not able to find the website of them (if they have one).
Anybody out there who knows more or happens to have a proper catalog of them?