Hmmm. Quite so. Interesting on more than one count.
Firstly, it raises a question of why engage the services of the Triple Ms (Three Matthews) to acquire a gun you could pick up at the local gun emporium? Perhaps, if you were intending to murder people, you might not want to acquire a registered guy, but Canad'a controversial long gun registry had already been all but tossed under the train. Moreover, - OK, so call me guilty of profiling but - it looks to me that buying merchandise from the Triple Ms would be any guarantee that the weapon might not already have a history.
Secondly, although, reportedly, shotguns are successfully used in approximately 3 percent of suicides, it's guaranteed to be a pretty messy affair and not at all the tidy little entry wound implied in the "shot in the eye" sudden death of WM. Basically, if the victim - or somebody else, in the case of murder - shoots at point blank range and the shots explode in the head, there will be very little left of that appendage which will instead be rather extensively redistributed around the room. Determining that the entrance wound was at an eye position would therefore be quite challenging. If the shotgun blast was NOT at point blank range, but some distance away, as one would think might lead to the probable determination of murder, the shot balls would have numerous impact wounds all over a person's face and would be much less likely to be fatal. (For those who aren't faint of heart, images of these results can be found online. Even without the TOS I wouldn't post the links here.) But considering the possibilities, I suppose there could also be a limited number of variations. For instance, a person determined to commit suicide but faint of heart, might rig up some kind of apparatus involving the gun trigger, string and a doorknob - that would allow the trigger to be released remotely either by kicking the door closed or (heaven forfend), if someone were trying to make a hideous impression on someone else by killing himself and tied that string to an outward swinging door, then the trigger would be pulled by the next person who opens the door. In either case, however, the target would be both further away and imprecise and shot would most likely end up all over the place, including the victim's face- something police investigators might surely have noticed when arriving on the scene. So again, preferring to wait until the trial(s), I meanwhile don't feel at all confident in arriving at either the shotgun as murder weapon or the shot in the eye conclusions. IMO. MOO. etc.