A couple of points re the OP,
Not everyone in Scandinavia has to keep all their guns at a club. I knew a guy south of Roskilde, Denmark, who had jumped through many hoops and was able to keep a variety of guns at his house, including a suppressed 10/22, a Walther autoloader 30-06, and his "home guard" issued rifle, a G-1. (I knew another guy who had a Madsen SMG in his house.) He said that if you bow hunt, your arrows must be labled, and if you wound an animal, and it is discovered with your arrows in it, you may be prosecuted. He knew a couple of people who were into handloading, and there was another series of hoops to jump through to possess powder and primers. I knew several old-timers on farm land who had break-action shotguns. They hunted pheasants, (they had some FAT ones there,) but the hunt and the shells were both tightly regulated.
I also feel the need to point out, the nation where you are the most likely to be a victim of a mass shooting is.....Norway.