I use PRVI Partisan brass. Most of mine is reused from just buying their ammo, both locally and online. Can be had reasonably priced, boxer primed, and shoots quite well in my M39's. It is the same as Wolf Gold, but usually costs less. I have also bought 100 count PRVI brass from Grafs, when they have it. Was 40 bucks a pop last time I bought.
Have also heard PRVI is a shade better than S&B.
Not Norma or Lapua quality though.