OK, here's the latest - I called Browning to discuss why their rifles have this problem with ejection, and how I managed to get the only 2 with this problem.
Here is the explanation I got -
We designed them to not eject a live round, but to be able to tell the difference in weight so they WILL eject an empty case. I then asked him why that's not stated anywhere in the owners manual that came with the firearm, guess what, he didn't know why.
OK, I'm a reasonable individual, so I went out and shot it, and as you can clearly see in the new video, an empty case is not ejected (maybe its internal scale needs to be re-calibrated)