Heavyiron is absolutely correct about who made this. I don’t know, however, if it is an official drill round or not. In favor of that, just going by the photo, would be the stab crimps in the neck. Firstly, I don’t know if that is the norm for this caliber, country and era. Secondly, though, they do not seem to have been pressed out from within at all. When rounds with crimps like this are fired, the crimps tend to take on a flattened look as the bullet that has been crimped in leaves the case. In the picture, they don’t look like I would expect them to in a fired case. Very, very hard to tell from that though.
It may be a locally made “ersatz-dummy round” or something that was done to inert it for a collection. I think it would take a Norwegian collector, or someone with a very good 6.5 x 55m/m collection to tell us.