You ever shot a rifle before? Know what the average trigger pull weight is? Ever been involved in a confrontation with a firearm? If you've ever done even one of these things, you'd know how easy it is to pull a trigger.Stanley’s defence is based on the claim that the gun went off “accidentally”. No one believes that.
Beyond a reasonable doubt is the burden of proof, which wasn't met.
As someone who has admitted he is ignorant of what rural Saskatchewan life is like and has no knowledge of the low number of officers who police rural areas and amount of time it takes the few of them to respond to calls, you should shut up. You are a world away from their reality.