I've been using S20 in 300WM and 90 Peak in 30-06.
S20 had feeding issues from the start but 90 feeds flawlessly.
Both shot mediocre with factory ammo but I literally tried one load and went straight to reloading. I managed to get S20 shooting about 0.5 MOA with 180gr Sierra TGK's @ 3150 fps (5shot groups). With the 90 I'm usually just under 1MOA with the same 180gr Sierra TGK's @ 2850 fps but I didn't really bother finding the right load as hunting season was starting. Good enough for now.
Not the most precise rifles I used, both Sauer and Blaser shot a lot better, but for a lightweight hunting rifle I'm fine with it.