No. On many occasions has a person survived a gunshot to the head. An example of this is the rapper 'Obie Trice'
Normally, the round will pass through the tissue, and cause excessive hemmoraging, or bleeding, which will deprive the brain of oxygen, and thereby die. It also depends on the placement, trajectory...
He died of complications from a ruptured abdominal aoric aneurysm he had suffered from for four months.
A broken heart and the will to live after losing his beloved wife of 68 years
Dennis Brain died on September 1, 1957 at the age of 36.