Back in the days I was heavily into heavy metal (of all kinds - started with unning Wild and Metallica and Finished with Napalm Death, Deicide, Sepultura, Pantera etc) and now I´m rediscovering in some ways couple of them (e.g just bpught all newly released Metallica). Anyways, if you´re also into nordic folk metal, I have a reference to you - Estonian band Metsatöll. They have also released all albums on vinyl and it all sounds pretty well to my ears (it would qualify as Viking Metal in a way as well, even though Vikings were present only on Estonian islands and not mainland back in the days):
http://www.myspace.com/metsatoll
http://www.metsatoll.ee/en/index.html
http://www.myspace.com/metsatoll
http://www.metsatoll.ee/en/index.html