Do you mean VV N-340?
VV usually means VihtaVuori which is a Finnish company...they are an offshoot of Lapua(the Finnish ammo manufacturer). It is very clean burning and consistent powder. Here is their url,
http://www.lapua.com/vihtavuori/index.html
There are several places around that carry it...just see who has the best prices.
Hope this helps...