Why not just shoot the gattling gun operator?!
The two men in the bell tower were able to pick men off the back of *running horses* who were pursuing Pratt's character, yet they didn't even attempt a shot at the gattling gun operator, who was maybe a third of the way further?
It might make a tiny bit of sense if the wagon were in a better strategic position, like at the crest of a hill. But they weren't. It was absurd. Also, the townsfolk didn't send out five or ten men on horses to circle around from the back? Yet they had the time and foresight to dig a friggin' trench and rig explosives?!
What an absurd movie.