Barrel makers don't really make barrels just for "Sako's", a gunsmith will usually have to take the barrel, machine and thread for your reciever and chamber for your choice in cartridge, cut and recrown the muzzle to length you desire. Yes, some barrels are made for Remingtons and especially for the Mauser where home gunsmithing has been all the rage. As for who makes the best barrel, that can be a heated debate and will usually be someone that you can afford and who's eta on delivery is okay with you. I know one guy that had to wait almost 4 years for a custom barrel from one of the best in the country making cut rifled barrels, too long of a story to repeat on why it took that long. Obermier(bad spelling) and Kreiger barrels are excellent. Personally I believe that cut rifled (or Broach cut) barrels are the way to go, but have had good results with hammer forged also.