This is a pretty amazing story. An armed private citizen assisted a police officer who was pinned down by the gunfire of a madman who had just killed 3 people and could have killed many more. Amazingly the concerned citizen, Vic Stacy, did so by taking a shot of 150+ yards using only a pistol.
The caliber and gun are unknown, but Stacy mentions a “magnum bullet” which could mean a .357 or .44. Stacy landed multiple shots on the shooter and this allowed the police officer to also land shots with his AR-15 while the suspect was distracted.