When Yeager goes to dive out of the window of the express office, he tosses his gun out the window ahead of him. But, in the next shot from outside, there is no gun visible on the ground and he is bare-handed running away from the building. He then dives behind a water trough for cover and suddenly has a gun again. And in typical "B" movie fashion he is seen firing at least seven shots from a six-shot revolver despite not having a gun belt or any other access to ammunition.
When the jury returns in the trial of Whiskey Joe, the jury foreman stands and a clear shadow of the boom microphone is visible on the wall behind him.