I have one, mine is a Sako L461 Vixen deluxe model. I also have the same rifle in 222 Rem, it's little brother but that rifle is just a plain old Vixen.
When I bought the 2 rifles, brass was fairly easy to get and the prices were pretty good.
Nowadays, the 222 Mag brass is much harder to get and the prices are ridiculous here, it costs more than double 222 brass.
I have a good supply, since I would buy the Mag brass whenever I saw it on the shelves. It's special order these days.
Cheers.