I did some testing on 5 Sako 85's in 260, 6.5x55, 308, 300 WSM, and 375 H&H. All with scopes mounted on low rings -- either Talley, Sako Optilock, or S&K. The only time had an ejection failure was if the bolt was moved very slowly -- unrealistically slow for any hunting situation unless your are deliberately trying to keep you brass from ejecting . In some configurations, I believe the brass does hit the bottom of the scope. The trajectory is such that it doesn't seem to have an affect on successful ejection, however. I tried the test with the guns in multiple orientations-- barrel pointed up at 60 deg, down at 45 deg, and the gun canted 45 degrees to each side.