CapnZapp
Legend
Except that would make the session suck, at least for me.If both sides are using ranged weapons, then neither side is trying to get close. Instead, they're firing at each other from positions of cover in an extended ranged battle. Which is exactly like any typical Western movie.
You're painting a picture where everybody's mostly missing because everybody's AC is increased by cover.
Not to mention how spectacularly unsuited 5th edition in particular would be with how it allows you to move, shoot, and move. You would always have to rely on your reaction, since everyone stays inside their house or whatever with full cover (no attack possible), except during their turn, when they move out, shoot, and move back out of sight again. But I'll give you that this wasn't what you had in mind, and so I won't discuss this particular scenario more.
What I will say is, that sooner or later one hero will realize two things:
1) their crowbar or axe deals more or less the same damage as their revolver
2) their hit points make it fairly safe to leave cover for a short while?
So why not just rush the bandits and axe them to death in melee? In most Westerns they're spread out, and would individually be helpless against this bold and surprising tactic!