Federal SMK 175gr. is what I use out to 1000yards. It is impressive at every distance. The 168gr. version may work better in your rifle for what you want, but don't push them past 850-900yards as they tend to become unstable.
Have a good supply of Lapua's as well, 170gr. Lockbase. I am quite sure these would be every bit as good in my rifle. I have tried nearly every match bullet recently at the range and my rifle likes Hornady 168's and SMK's from Federal the best, all loads were sub .50MOA at 100yards from the bench, some of the ragged little holes were just a bit bigger in some loads. All basically one hole, five round groups.
Shoot a variety of loads if you can, your rifle may like something the best. I would start with the Federal's and work my way through the list of match ammo that is on the market.