Factual error: Ash receives a pistol as a weapon, which is a revolver. 5 or 6 cylinders by the looks of it. Yet Ash can spam shooting it constantly without reloading, like a semi-automatic with infinite ammo. It is not a supernatural weapon; it just somehow holds 50 rounds of ammo to constantly shoot without reloading in a revolver.
Character mistake: When Ash talks to someone, a small scene plays out, and he will suddenly be standing there with nothing in his hand. But the moment the scene ends, he suddenly will still be holding whatever weapon he had before talking, like the shovel.