What Cajun Bass said:
From what I've read, "cowboys" didn't wear or carry guns on their person all that often. They were more in the way than anything else while working cattle. They might keep them in their bedroll, or back at the wagon, if they even had one. A cowboys job wasn't to fight indians or bad guys. It was to work cattle. Plain, hard, dull, boring work.
I grew up on a ranch. I knew guys who rode with and were friends with Tom Horn when I was a kid. A hired hand was on the jury that convicted him. I rode a lot of miles with those old timers and I pulled a lot of sweaty saddle blankets off a lot of good ol ponies.
When I was young, I envisioned myself as one of those ol cowboys, and I strapped on a Colt and off I went. Well that lasted about 2 days.
I soon found out just what the old timers had been telllin' me. Unless you was expectin' a fracas, the guns stayed in your bedroll in the chuck wagon. Ain't nuthin' worse than havin' a hunk of iron bouncin' around when your chasin' a critter. Your rope kin git hung up in it.
If your pony comes unwound, that gun is beatin' the heck out you on ever jump. If you git bucked off its just one more thing to bust you up when you hit the ground. If yure on the ground wrasslin' critters and such, a dammed gun is just in the way. You can git it hung up on a critter or in a fence or a hunderd other ways to git kilt a little.
As for Elmer's story of shootin' his horse while bein' drug. That's pure horse pucky. I kin tell you if you're bouncin' around on your back, ass forward under the feet of a runnin' horse, that gun belt is up around yure neck and the gun is back a half a mile. You couldn't reach it, and if you could, you'd be beat up so bad and bouncin' so hard that you couldn't hit that horse in the gut, let alone in the head.
No sir, there was times to carry that hunk of iron. Mebbe to the saloon in town, or to git your picture took, but not out there on the range.. No sireee.
What JMR said:
Real cowboys probably carried very little ammo after metallic cartridges became the norm. Most carried a handgun in their saddlebags, if at all. Unlike in the movies it is much harder to do the work real cowboys did with a gun belt on.
By the time I returned to the ranch I was 40 and I had got some smarter.
I carried a 6" S&W Highway Patrolman and two speed strips in a cantle bag on my saddle for over 20 years. Never saw an Injun or a rustler in all that time.