9% is something and it should be noticed but I'm not sure if they work properly.
First picture with 1:42 timer shows scatter without bulletins.

Second picture with 0:46 shows scatter with triple bulletin, yet scatter is the same.

Ok, but maybe it's just problem with shown scatter? Right? Circle does not show it properly but it works? Well, I dont think so. 3 shells(in fact 4 but it hit in the same spot) are out of the normal scatter so if the scatter was lower by 9% shells should not land so far.
