actually unstressed on a range taking your time with plenty of practice you can hit a person at 25yds consistently.  

most officers don't practice and only go out to qualify once or twice a year

under stress your accuracy goes to hell in a handcart cut the range to 1/3

an old sage once said the only use for a pistol is to be able to fight your way to a rifle. 

as others have said.  they should have hunkered down, contained him with suppression fire until the tactical squad arrived.  

this is not only a lack of equipment but training.  RCMP brass fail x2