8 Hollywood Gun Myths That Get It Completely Wrong

I’ve spent twenty years putting the world’s firearms through their paces, on every continent that has weather. Then I go to the movies, and within about ninety seconds I’m arguing with the screen. Quietly. I’m a guest in the theater.

Hollywood is a master of tension and a stranger to ballistics. That’s fine. It’s also why a generation of perfectly intelligent people believe things about guns that simply are not true. So here are the eight Hollywood gun myths I run into most, and what actually happens when you’re the one holding the thing.

Myth 1: A suppressor turns a gunshot into a polite little “pfft”

This is the big one. The hero screws a tube onto his pistol and from then on the gun makes a sound like a stapler. Nobody three feet away even looks up.

Here’s the reality. A suppressor shaves roughly 20 to 35 decibels off the muzzle blast. That’s meaningful. It’s also nowhere near silent. An unsuppressed pistol or rifle runs somewhere around 155 to 170 decibels. Knock 30 off the top and you’re still sitting at 120 to 140 decibels, which is the neighborhood of a jackhammer or a jet on the tarmac. Anything at 140 and above can still damage your hearing on the spot. That’s why I wear hearing protection on the range even when everything is suppressed.

What a suppressor really does is take the sharp, ear-splitting crack and turn it into a deep, heavy thump you feel in your chest. Useful. Civilized, even. But if someone fires one in the next room, you will know.

Myth 2: Rack the shotgun and the bad guy runs away

You know the sound. Cha-chunk. The homeowner racks the pump, the intruder thinks better of his life choices, and the scene resolves without a shot. There’s even a school of thought that says you should keep your home-defense shotgun with an empty chamber precisely so you can make that noise.

I would gently push back on all of it. When you rack a pump-action with a round already in the chamber, you don’t add menace. You eject a perfectly good shell onto the floor. And in the dark, that distinctive cha-chunk does one reliable thing: it tells anyone in the house exactly where you’re standing. You have traded a loaded gun and the element of surprise for a sound effect. The pros I know keep the gun ready and keep their mouth, and their slide, shut.

Myth 3: Guns fire perfectly well underwater

The action-movie diver pops off rounds at a pursuer twenty feet away through open water, and they zip across like they’re cutting through air.

Will a modern gun fire underwater? Surprisingly, yes, once. The cartridge carries its own oxidizer, so it doesn’t need air to go off. After that, things get ugly fast. Water is far denser than air, so a bullet sheds its energy and velocity almost immediately. The MythBusters crew found that a supersonic rifle round like the Garand broke apart within a couple of feet. The genuinely quiet setups pair a suppressor with subsonic ammunition, and even those are far from silent. Real range is measured in feet, not yards. Worse, if there’s an air bubble trapped in the barrel, the pressure has nowhere to go and the gun can come apart in your hands. Semi-autos usually won’t cycle either, so you get one shot and a jam. There are purpose-built underwater firearms, like the Russian APS and the H&K P11, but your everyday pistol isn’t one of them.

Myth 4: A bullet throws a man across the room

Someone takes a hit and flies backward through a plate-glass window. Dramatic. Also a violation of physics that Isaac Newton would like a word about.

For every action there’s an equal and opposite reaction. Whatever momentum a bullet could deliver into a target is the same momentum delivered back into the shooter as recoil. And I’m not getting launched across the range when I pull the trigger. A bullet, even from one of the most powerful handguns ever made, is a small, fast object. It does terrible work by penetrating, not by shoving. People who are shot don’t sail through the air. The honest, undramatic truth, which the movies avoid because it’s grim rather than thrilling, is that they tend to simply drop. I’ll leave it there.

Myth 5: Just shoot the lock off the door

The hero needs through a locked door, so he fires a round into the padlock or the knob and kicks it open. Clean. Instant.

In real life, shooting hardened steel at point-blank range is how you catch a fragment of your own bullet in the face. Locks are made of tough stuff specifically so they don’t surrender to a single pistol round, and a handgun cartridge will often spit shrapnel and ricochet right back at the shooter. Breaching a door is an actual discipline. The teams that do it use dedicated shotgun slugs called breaching rounds, fired at a steep angle into the hinges or the lock body from inches away, frangible by design so the round disintegrates after it does its job. It’s precise, practiced work. It’s not a guy squinting and firing from across the hall.

Myth 6: Shoot a car and it erupts in a fireball

One bullet into the gas tank and the whole vehicle goes up like the Fourth of July.

Gasoline in liquid form is shockingly hard to ignite with a bullet. A standard round punching through a fuel tank just leaves you with two holes and a puddle. To get a fire you need a spark and the right fuel-to-air vapor mix, which is why every screen explosion you have ever seen was a special-effects charge planted by a professional. Incendiary or tracer ammunition can sometimes do it, under the right conditions, but that’s not what’s loaded in the hero’s pistol. The truly inconvenient fact for screenwriters is that a shot-up car mostly just keeps being a car, now with poor fuel economy.

Myth 7: That cocking sound. On everything. Always.

This one I can’t unhear, and now neither can you. In the movies, every time anyone so much as lifts a firearm, there’s a metallic click-click on the soundtrack. A character picks up a Glock and it makes a noise like a revolver being cocked.

The trouble is that most modern pistols have nothing to cock. A Glock and its many cousins are striker-fired, with no external hammer to thumb back, so there’s no sound to make until you actually press the trigger. Sound editors add the ratchet anyway because audiences have been trained to expect it. You will hear a gun get cocked three separate times in one scene without a single round being chambered. Once you notice it, the spell breaks a little. Sorry.

Myth 8: The hero never reloads

Our man clears an entire warehouse of adversaries, one pistol, no reload in sight. The magazine, apparently, is bottomless.

A typical full-size pistol holds 15 to 17 rounds. A compact carry gun, often fewer. A magazine is a finite thing, and running one dry in a hurry is the single most common way to find yourself holding an expensive paperweight at the worst possible moment. Reloading under pressure, smoothly, without looking, is one of the genuine skills that separates the trained from the hopeful. It’s also undramatic to film, so it gets quietly skipped. When a movie does show a fast, clean reload, watch the actor’s hands. That’s usually a sign someone on set actually knew what they were doing.

The truth behind these Hollywood gun myths

None of this is a complaint, exactly. A film is in the business of feeling, not physics. A silent suppressor keeps a scene tense. A man flying backward sells the impact. A bottomless magazine keeps the action moving. These Hollywood gun myths persist because they work as drama, and the truth, which is quieter, more careful, and frankly less cinematic, would slow everything down.

I still enjoy the films. I just enjoy them the way a chef enjoys a fast-food commercial. I know what’s really in there. And now, so do you.

If you want to see how real guns show up on screen, I broke down every weapon in The Guns of John Wick and traced what gun John Wick actually carries across the films. I also ranked the 14 guns that genuinely changed the world.

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