There have been over 5,000 western movies made and over 95% were set between 1850 and 1900 and most of them were set in 70s and 80's.
Keep in mind that the depiction of the old west in TV and movies is a far cry from reality. While settlers greatest fear of death was from a variety of causes along the trail: lack of food or water, Indian attacks, accidents, or rattlesnake bit, most people died of disease related to unsanitary conditions. Surprisingly, one major causes of death of settlers on the Great Plains was suicide. Loneliness, despair, and mental illness were common.
Most people did not own guns due their cost. Farmers usually could not afford them. Cowboys were likely to have guns but not all of them. Gunfights where two fast guns faced off in the streets were created in dime western novels. There is little evidence that any such fair gun fight ever occur. Most people that died from gunshot were either ambushed or were accidently shot. Wyatt Earp in an interview in 1900 was asked how did he apprehend most criminals. He said, that if he knew he was going to have to use his gun, he would always draw it first. You never give them a chance to draw a gun on you. If you have to shoot one, the safest way is to shoot them in the back.
Indian attacks on wagon trains were very rare. Contrary to popular belief, wagons were seldom circled defensively. The trails that wagons trains followed were narrow and well trodden so wagons stayed on the trail to avoid getting stuck, even at night.
What was true about the Old West was that it was a pretty bad place to live. Farmers and ranchers worked from dawn to dust making very little money. Some literally starved to death. Most of the towns were filthy with no law enforcement. The town general store was often the focal point for residents, farmers, and travelers. A saloon was common as was a blacksmith, and a town whore. Doctors, demists, lawyers, churches, clothing stores, and restaurants were not. Most towns that were not at a crossroads of two or more major trails or a railroad stop, became ghost towns in the early twentieth century.