Re: 7mm Remington Mag Lapua brass?
Lapua has never made the belted cases, and yes, anything marked Lapua in 300 WM or 7 Rem Mag were most likely Norma production, subcontracted to them . Norma makes good brass, it just tends to be a bit softer and not quite as durable as ours. Dimensionally, still very good stuff. As far as the new 260 cases, no, that's pure Lapua production, as is the 22-250 or the 308 Palma brass we introduced last year. The belted mags are done out of house as we're not currently equipped to do the very different draw required for the beted magnum family of cases. Somewhere down the road if we get enough requests, possibly, but not right now.
The annealing visible in the necks is something virtually every manufacturer does for bottlenecked cases. Most then treat the brass to remove the annealed coloration, though this step is entirely unneccesary. Most customers we've heard from tend to like the visible evidence that the cases were properly annealed, and we leave this intact. Most military ammunition bears this coloration, too, since the military customers have no real concern for this, or the reloadability of their brass.
Hope this helps, but if there's any questions, I'm always glad to answer them.