Those moose are smaller than ours, and shots are mostly taken in thick woods, 100 yards or less.
How much smaller? European Alg, (Elk, Moose) come in various sizes...from ~450-800 lbs. for lady mooses to 850-1800 pounds for the fellows. My American Elk was "smaller"... about 500 lbs, iirc. Point is, the European Meeses may or may not be as large as a particular individual American one, but they can be plenty large. With the 8mm and 9mm rifle cartridges Scandinavians have to choose from, the "little" 6.5 apparently does well, and is highly regarded. Distances? Having no direct experience with Scandinavia, but having lived in Switzerland for 2 1/2 years, I'd say yardages can be as varied as they are in the eastern/central U.S.of A.
As I see it, the manufacturers have to come up with something new on a regular basis to stimulate sales. Years ago, the "short" magnums were supposed to be the cure all, but, now they seem to be languishing. My favorite, the 257 Roberts has gone the way of the Dodo bird,
but The old "standards"...30-06, .270, .308, 6.5 X 55 Swedish, 243, 223...all seem to be doing whatever they are asked without much fanfare and hoopla, which they have done for years, and will likely continue doing so for the foreseeable future!