Re: Vihtavuori Powder
If you do a web search, you might be able to find a Vit dealer, Monty Millican. He used to have very good prices but it's been two years or so since I've bought in bulk from him.
I think it was drop shipped from the importer in Bensenville, IL although I believe Monty's out of OR or WA.
N310, N320, N350, 3N37, 3N38 have all been good pistol powders for me (9x19, .38 SuperComp, .45, .40). Limited experience with their rifle powders but I've certainly read good reports. Like others have said, extremely clean burning. For .38 Super, N350 is a gold standard -- so much that you can identify N350 users by the flash from the comp. So clean burning, that I've never wet cleaned my primary .38 SuperComp barrel (120,000 rounds).