I can take some pictures when I’m home in a couple days. I believe the picture to be misleading however, as the very forward portion of the lug is still full bolt diameter.

Those are neat Oberndorf adds Rothhammer! I still wonder who made this rifle, being the retailer, Ed Kettner (not the maker Franz Kettner) they had multiple firms in Suhl producing their ordered rifles. Lancaster mentioned the possibility of Haenel themselves, I looked through brochures to see if they possibly offered Mausers, but haven’t come up with anything yet, has anyone spotted one before? With the interrelationships in Suhl, it sure makes it hard to narrow down.