TilleyMan,
http://www.pettsons.net/m640.html
Has the action a large front ring? If s, yours is most likely a built on a FN action. Make sure it's not built on built a Swedish m/38 action-this action is absolutely nothing to write home about, check the link and you will see why http://www.pettsons.net/m46.html
How much does a Husqvarna cost in your part of the globe?

Cheers
Johan