I've seen archaelogical artefacts from East Baltic graves with runes. The commentary in the exhibition stated that runes and rune-related shamanic practices were imported across the Baltic sea. I'm not a historian, I'm only conveying what I've been told by enthusiasts or casually ran into.

I suspect it might be neopagan wishful thinking. There is no knowledge of any such practices among the Norse at least. There is some weak connection between runes and magic through Odin but from what we know runes were used for every day stuff like accounting, who owns an object, contracts and personal letters. And of course the mostly Swedish practice of praising the exploits of your relatives on rune stones.