The slide is locked open after the last round, so it's going all the way back. Looks like the rounds are bouncing around in the slide during ejection thus the brass marks on the slide. To me it seems the ejector is not holding the case till it throws it out the slide. The marks on the front of the cases looks like they are "Riding piggyback' on top of the next round going in the chamber. When it hits the barrel, it flips over and the primer end leaves the Brass marks on top of the slide. Call R/I or email them your pics for their input.