Unspellable,
I thought of that, too. While I did not use a standing rest I did shoot it off hand and the RB shot again too much to the left. Moreso, when I shoot Right crossing clays I always miss with the RB and more than not brake them with LB.
The chokes are quite open and I might get too thin a pattern at 30-40 yards to make an approximation on POI. But I would expect a deviation present at 7-10 yards to be amplified that much more at longer distances.
After all I would have to try it, but I doubt the shot will turn around.