I have a Tikka T3 in 338 Federal. So far the results have been fantastic. I have been using 185 grain Barnes triple-shocks over 47.7 grains of Varget in Winchester cases using 210M primers. I am getting 2715 fps and grouping a half inch at 100 yards.
I've never used a factory round in the gun, just my own loads. Recoil on the bench is a bit stout, but free-hand standing is not too bad.
Considering you use double the powder for a gain of ~400 fps in a 338 Lapua Magnum, I thing this round acquits itself quite nicely.