I just bought one on May 1, 2007. My journey on shooting it in with proper Smokeless load is here:

http://www.the-gleasons.com/this_is_my_savage_10_ml_page.htm

Yes, like Bad Bull. Do some states not allow them? Yes, but some do. I hunt in Va and NY, and they both do now or it was clarified to allow smokeless powder. Special regulations on them? Varies by state. Some consider them a ML, some don't. I bought mine because it is more accurate and shoots flatter. It is NOT a CF rifle, you don't use cases, you use 209 shot shell primers, the same as an inline. Only difference is the Savage shoots higher pressure smokeless powder and the other MLs shoot BP substitute, which makes smoke, but is little difference except power. For a comparison of Smokeless vs BP see this:

http://www.randywakeman.com/ballltd120.htm

I intend to hunt both ML and rifle season with the Smokeless Savage. It is a great rifle for $550. I like mine, very accurate, and very little recoil with 44g of 5744 using 300g bullets. A really great board for Savage facts is:

http://dougva.proboards34.com/index.cgi?board=Savage

There are a lot of guys on that board who know a lot more about them than I do. Regards, Chap Gleason