So, I'm out at the range today with my dad and we're shooting various pistols. In the stall next to us, a guy and his son (probably 10 or 12 years old) are setting up to shoot an S&W .357 Magnum revolver with a 4" barrel. The kid takes the gun, fires of one shot fine, fires another one, and the barrel goes downrange. The barrel separated from the gun right where it meets the frame. Nobody at the range had ever seen a failure quite like that before, and the gun was apparently brand new. He was firing factory ammo as well, not reloads. The best the rangemaster could come up with was some sort of metallurgical problem or a manufacturing defect. Anybody ever heard of this happening?