This is a good example of why older Westerns, pretty much before 1965, were grittier and more credible than the ones that showed modern day dorks in the old West.
The movie seems light hearted, yet mixes in the grit just the way it fits in real life, in ways uncomfortable. Audie Murphy plays a very real character, a backwoods nineteenth century trapper who ventures into the big city. His "good eyesight" becomes critical as the film continues. Indeed, good eyesight is something of great value in the old West, and it makes the two main male characters what they are.
The supporting characters are also very believable for nineteenth century characters. A great diversion from the usual garbage that made you think more that the actors were playing video games off set. Fortunately, there has been a resurgence of the reality and grit that made the fifties great.
The "mood" comes across very clear and works great. The old West city struggles between civilization and savagery, as we see in the way the store owner played by Jim Backus behaves. The store owner depicts pretty much the status quo of the town.
This film has a lot going for it, particularly in believable character motivation.