I pulled this quote from this link:http://precisionrifleblog.com/2013/05/31/lapua-brass-for-7mm-rem-mag/
From Kevin Thomas Lapua USA.
Actually, I donít believe that Lapua has ever made 7mm Remington Magnum brass. There was a time when we offered 300 Win Mag brass, but this was also something that we didnít manufacture; it was produced under contract for us by Norma.
I think this may well have been the same situation for the 7mm Mag brass youíve encountered. Iíll have to check with the Finns to make certain of this, but Iím fairly confident that this is what youíve run on to here. Theyíve generally had a fairly strong aversion to producing belted cases, and this is what makes me suspect that this is the case.
We have a 7mm Naturalis hunting bullet, but aside form that, the 7mm bore size seems to be a weak spot in our line. No surprise that the 6.5s hold more sway in that region of the world, but we keep trying to get them to broaden the 7mm offerings. In the meantime, whether the brass was produced by us or Norma, it should be good quality stuff either way. Enjoy!