The Colt was the first handgun built with westward expansion in mind. It was a gun for the plainsman.
You had the Walker in 1848; big, heavy, brutal to shoot, impossible to carry in the belt (4 lbs?).
1849 came the pocket Colt in .31. Good for card sharks and home owners, but not much use against enemies in the open.
2nd model dragoon, still too big for normal belt carry. Folks wern't as big as us at that moment. Walkers and dragoons were issued with saddle houlsters.
Then comes the '51. Sleek, bueatiful, smooth in the hand, feel that metal snick into place when you thumb the hammer! And it fits in your belt, right in front where you can get to it with either hand. Now you have your rifle for long range, and six quick shots for close in work.
Only now you are fighting the plains Indians. Mounted warriors, they draw your fire then come in quick, with lances, and finish you off.
So you see the enemy, head for a rise and dismount. The Comachee stay about 300 yards out and taunt you to draw your fire. The rifles pop and they come at you. No time to reload the rifles you don't even try.
By the time you get the Colt out of your belt they are at 200 yds. You thumb back the hammer and take aim and they are at 100. You aim center of mass and pull the trigger, the cap fires at 75 for the first shot. You get off one shot per second for 4 more seconds and they are on you or they are dead. Shot # 6 is saved to put through your own brain.
This is not speculation, but standard documented accounting of plains fighting from several sources. The system was perfected by the Texas Rangers, in the 1840s, using the Patterson, Texas model, also a .36 cal. (look up the Battle of the Perdinales, several famous names there, one was Walker who helped Colt redesign his product and made his name imortal, Colt named the model after him) Using Colt revolvers the mounted plainsman was considered good for 10 to 1 odds against the Indians. It worked out as long as they could get to some high ground and make a "stand".
Custer------ 250
Grazy Horse-2500
That's why Custer left a trail of dead troopers up the hill at LBH, and why the Indians knew they had to stop him before he reached the top of the rise.
A Texas scholar named Webb (Prof at U Texas, several times pres of the American History Society and Association of Southern History) wrote a book called The West, many years ago. It is still the classic trext on plains history. He devoted an entire chapter to the Colt revolver if my memory serves me (I read it 20 years ago).
:m2c: