“Wanted” posters almost always had a few bullet holes in them.
Town pop= 300, Number of prostitutes = 1, yet no evidence of syphilus, gonereah, or other extremely common Venerial diseases
The slow talking quiet gentleman is gonna kick some ass (eventually).
Currency was almost always dollars, US Dollars (not common until near the end of cowboy “era”
No one sleeping/living on second floor of a saloon was ever shot by bullets fired upwards by mirthful merry makers celebrating on the main floor.
Horses were accustomed to riders suddenly leaping onto them from above or behind, and wouldn’t become skittish or scared by such actions.
Horses weren’t bothered by Guns being discharged just behind their ears.
Horses never releived themselves publically.
Everybody owned a horse, but unless it was important to the plot, nobody ever took care of them.
Everyone who died got a head stone, or a basic woodedn cross, neatly lettered with their full name, date of birth and death, and often a pithy epitaph.
Everyone was buried in a coffin.
The Pony express was a huge concern, judging by the number of people who rode for it (actually, something less than 10 riders in 7 short months)
Guns required little or no maintenence, and were made of a lost alloy that never required cleaning, polishing or repair.
Player Pianos would often speed up when shot, or by some magical sensing device, during a bar fight.
Night time means either a full moon or no moon, depending on what best suits the plot.
A Kerosine Lantern would provide ebnough light for a large room, bright enough so that small details on maps could be read at a distance.
At night, Coyotes howl, but politely pause between lines of dialogue.
Everyone wore cowboy boots, unless they were a prissy eastern type (who probably owned the bank) - he wore white top Oxfords
Children were very rare, and if they were present, used oddly stilted dialogue, to inform the hero that “Black Bart poisoned the well!”
Badguys were very dumb, they would invariably try and escape by “the pass”, yet everyone got “head(ed) Off” there…
Regards
FML