The verdict was delivered by a five-member jury after a six-day trial which ended with a visit by the presiding judge, the jurors and lawyers to the crime scene.
The defendant has also been found guilty of one count each of possession of a dangerous weapon and possession of an unregistered firearm.
The 12-gauge pump action shot gun was used by the defendant to commit the offence which was the result of a domestic dispute.
During the trial the prosecution told the court the defendant shot her when she wanted to end their relationship.
