A handgun is just another portable tool in the tool box one can choose to use in one's activities of daily living, (ADLs)
Just because something is portable, does not make it reliable, or effective for task.
In the same token, just because something has been, and has proven up to a point to be reliable, does not mean it will when called upon for use again.
Nothing is absolute, and being as life is constant, too many variables come into play to suggest any tool design, in this case revolver, or semi-auto, is a better tool.
Some tracking of tools and tool use can assist one in a starting point for them, as they investigate and verify for their ADLs.
Revolvers are not dependent on magazines as part of the function of the tool, nor are they ammo dependent to run the gun.
One can also track back to the history of revolvers, that quality dry fire practice, and quality practice with mild loads, instills skill sets which are useful and suggested.
Police back in the day used to shoot qualifications out to 50 yards, not feet, yards.
Revolvers can also be tracked to lasting a long time, and while they wear, breakage in the context as many use use the term, does not occur.
Meaning some revolvers are still original that are even 100 years old.
Take a Model 10, designed about 1898 if memory serves me correctly, it was designed to shoot 158 gr bullets to point of aim/ point of impact (POA/POI).
This was a issued weapon to many LEOs for one example and it is proven, it simply put 158 grain bullets where they needed to go.
Be the firstest with the mostest - Gen. Bedford Forrest, CSA.
Officer is first with getting gun out, and putting the 158 gr where is needs to go and threat is stopped.
Pretty simple and straightforward concept.
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Semi-Autos are dependent on magazines to operate, as firearm has to feed, extract, repeat, and shoot POA/POI in order to get shot placement.
1911 for example is another old proven design, as it was originally designed to be a combat weapon.
This gun holds 7 rounds total, and originally loading was a 200 gr bullet and was changed to 230 gr.
The reliability of this 1911 as originally designed coupled with being combat accurate, afforded again , being firstest with the mostest with shot placement.
European countries, with smaller guns, in small calibers, with only 6 or 7 rounds were the same way.
Portable, Reliable tools, that fed, extracted, repeated and put bullets where they needed to go.
It did not matter if these were .22, 25ACP, or 32ACP, this is what these guns did , will still do, and have a proven history of doing so.
What has happened is, marketing and myths have precluded common sense and proven history.
Life is real, and folks do not want to deal with reality, instead escapism is a coping mechanism.
If one shuts their eyes, sticks fingers in ears, and utters nay sayer phrases, then they don't have to deal with reality.
Ego, and Pride kills, always has, always will.
So the glitch in the get-a-long is, society has been dumbed down and indoctrinated by everything from restricted laws, that benefit criminals and hinders law abiding to eroding common sense and free thinking.
One can buy skill and targets - today.
One does not have to earn skill sets, and the old school common sense of having a gun, is dumbed down, as evidenced by enacted laws, surveillance cameras and the like.
One does not have to learn correct basic fundamentals of shooting well enough to place bullets.
They have guns now , that the mere ownership keeps evil away, and if...if one still has to use that gun, the evil will run from how it makes noises being employed, and the hi round count of bullets that do mean and nasty things to media shot, is going to automatically keep evil away, all one has to do keep tripping trigger and if bullets hit what it is supposed to, it will guarantee a one shot stop.
Or,
One has to use what a gun school instructor says, to take that class they offer as the instructor hates revolvers, they do not hold many rounds, and there is always the threat of needing more bullets.
Gun school sez the student has to have this make, model or caliber of semi auto handgun, because...and it varies from they failed miserably in the real world but they can make a living doing gun school stuff now to ...
...they have only been shooting a short time, but have really neat writing skills, and they can be a notable person on Internet.
to...to many others examples to name.
Gun manufactures forgot what got them to where they might have been, if they are a old company.
It is about them, money, ego, pride and image for them.
So they "clone" a gun to get a piece of a already small slice of pie for that firearm related gun, ammo or whatever.
New companies come to be, to cash in on that slice of pie too.
All they have to do is get a retired military person to shoot that gun one time, and the way marketing works and legal definitions work is "This gun was fired by a Navy Seals that served in Bum Steersville in '87"
Or, "This instructor assists part time with a guy that was a cop for 14 years in City that made the news with riots in some year.".
My take, old guns are better, metallurgy is better, and proven bullets designs will still work as the human body is still the same as it always has been.
Revolvers have advantages in being reliable and working.
Semi-Auto designs that are original in design, metals and all still work with bullets they were designed to use.
Shot placement and being first is the key, always was, always will be.
In order to do this on has to have a portable and reliable firearm, either revolver, or semi auto, that fits them, and they will carry, and get correct basic fundamentals with, and continue quality practice with - so they will have a gun, they can use if evil shows up during ADLs.
The reality is, we are all dying, when it is your time to die, you die.
There will always be more BGs than one can carry ammo, there will always be a wish for having a bigger gun, with more powerful ammo.
The faster one accepts, they will die someday, and it does not matter revolver, or semi, round count, or caliber, the faster they can quit wasting valuable energy on that which does not matter, the worry and instead use that energy for confidence .
If one has confidence, there is no room for worry.
If one has worry, there is no room for confidence.
Pick which one which makes one feels best and stick with it.