#5: Webley .455 revolver:

If the Colt Peacemaker was the "gun that won the West," the Webley was the gun that won an empire. Most in this country were cut down to accept .45 ACP cartridges with moon clips. The Webley, in its various Marks, was in the service of the Empire for eighty years or more. The pictured model is a Mark VI, the model used in two wars for killing Jerries. Indiana Jones carried one in the third "Raiders" movie, there is a shot of him opening it up and the extraction star lifts up, but the gun is empty.
#4: Smith & Wesson K-22 Masterpiece, .22 rimfire:

The K-22 was the first really accurate pistol that I ever owned. I shot it a lot and learned a lot about shooting from my range time with one. When I spent time at my parent's farm, I used it with .22 shorts for popping
feathered rats pigeons. For a time, I lived in a place where I had no access to a range, so I loaned it to a friend. His place was burglarized and the gun was stolen.
#3: Ruger New Model Blackhawk/Vaquero:

This is a Vaquero, Blackhawks have adjustable sights. They are modern versions of the Colt Peacemaker. They are a lot stronger, though, and with the transfer bar ignition system, they are true six-shooters. That was dangerous with a Colt Peacemaker, for if you dropped the gun with a loaded chamber under the hammer, the gun would fire. Which is why, back in the day, nobody loaded the sixth chamber unless they were going into a fight.
#2: Smith & Wesson M-29, .44 magnum:

Not the most powerful handgun in the world, but good enough for most jobs. They are excellent for hunting
hoofed rats deer in forests. I carried one for deer hunting in Vermont, because most of the time I couldn't get a clear shot of more than 100' and when pushing through heavy brush, it's a lot nicer to be doing that with a holstered revolver than with a rifle.
#1: Cold M1911, .45 ACP:

Probably the finest military handgun ever. In a bout of sheer foolishness, the US replaced it in 1984 with the M9 Beretta 9mm, a move that has been unofficially regretted ever since. Often copied, there have been many attempts to make guns that were as good as or better, but almost a century after John Moses Browning designed it, the 1911 Colt is the gold standard of handguns, firing the cartridge that is, in itself, the gold standard of self-defense cartridges.
I have a fondness for automatics, but it is pretty interesting that when I come up with five favorite handguns, four are revolvers.