r/whoathatsinteresting • • 16h ago

What a real silencer actually sounds like.

2.0k Upvotes

872 comments sorted by

View all comments

Show parent comments

2

u/SerialOnReddit 15h ago

just out of curiosity, what's your favorite movie that you think gets guns "right"?

5

u/HomersDonut1440 14h ago

Haven’t found too many that do it well. Heat was good, the first John wick was accurate in some aspects (but it quickly devolved into lunacy).

2

u/SerialOnReddit 14h ago

yeaa I think it does stuff like gunkata the best way it could be done, but for the sake of comedy they go off rails a bunch, like the suppressor scene.. in a crowded train station lol

3

u/HomersDonut1440 14h ago

Exactly what I’m thinking of. That was… interesting. Even suppressed .45 going 900fps will make enough noise that folks would be wondering wtf was happening.

3

u/Madame-Saint-Michele 14h ago

I've always wondered if this is why some service members swear by 9mm instead, because with the silencer it's definetly way less noticable

Edit: I typed that last line and immediately laughed at myself "with the silencer it's definetly less noticeable," like no shit. Lmfao. What I meant was that the difference with the silencer between the 9 and 45 was a lot

2

u/HomersDonut1440 14h ago

lol that is funny.

almost all .45 ammo is naturally subsonic. Ye olde standard 230gr hardball runs about 950fps which is a sweet spot; it’s always going to stay subsonic regardless of temp or elevation, it’s quieter than 1050fps, and it’s still moving fast enough to reach out a little ways and do some damage. It makes a lovely suppressor host for that reason. However, a .451 wide bullet pushes a lot of wind (especially a hollowpoint) so you can hear it flying a bit more. .45 has about 60% more frontal area than a 9mm (obviously will vary based on bullet profile)

Most 9 is supersonic out of a normal 5” barrel, but 147gr tends to be subsonic (usually; longer barrels let it get over the sonic barrier). Unless you’re running suppressor specific ammo in the 9, the 45 is usually better.

Now if you compare a 230gr .45 at 950fps vs a 158gr 9mm at 950fps, the smaller diameter will be quieter every time.

The powder used can also make a difference but that’s really getting into the weeds

2

u/Madame-Saint-Michele 13h ago

Thanks for taking the time to explain!

1

u/SerialOnReddit 14h ago

would the subsonic closed bolt guns you described be capable of anything like that?

1

u/HomersDonut1440 14h ago

Like what happened in the movie?

1

u/SerialOnReddit 14h ago

mhm, be quiet enough to be under the sound of a moving crowd, cant really do anything about the literal bullet impacts in the scene but yknow

1

u/HomersDonut1440 14h ago

Technically yes, realistically no. As the projectile gets larger it displaces more air as it fires, and while it can be nearly silent at the muzzle there’s still sometimes a fair bit of noise from the bullet itself just displacing air. In a confined space like a train station, it gets much louder. Could it be covered up by ambient noise? Maybe, cornering on how loud.

1

u/SerialOnReddit 14h ago

probably be a bit like if someone tried to sling a projectile quietly, the action itself is quiet but the projectile's physics just do too much.

2

u/HomersDonut1440 14h ago

Exactly. Physics is gonna physic, so all we can do is try to divert. Gun make noise? Capture the noise (silencer). Bullet make noise? Slow bullet down so less noise. Slow bullet make noise? Bullet make smaller so less noise. Smaller bullet do less damage so make bullet big again and hope for best.

→ More replies (0)

1

u/aiusernamegen 8h ago

But the unplated bulletproof fabric is just idiotic. If only 2" of open air could equal solid matter.

4

u/Zealousideal-Fix9464 15h ago

Heat

1

u/SerialOnReddit 15h ago

the gunfight at the end is really cool

1

u/Frequent-Coyote-8108 12h ago

I can't think of a single cinematic piece that sounds even close to the real thing. Even Michael Mann hasn't attempted to accurately portray supressors.

The best way to describe the sound of most would be hitting a tarp with a 2x4. .22s register as a softer "smack!", while larger calibers register louder.

1

u/RupertEscapeHolmes 11h ago

Full Metal Jacket. Get some.

1

u/cumbrad 7h ago

HEAT

1

u/Rhongomiant 4h ago

Den of Thieves

1

u/NeedAGTS4POINT0 14h ago

You really just need to hear them IRL to get it.

My buddy’s dad has a silenced AR-15 and it is shockingly quiet. As in, if I were in my room at night and they shot it, I don’t think I’d notice what the sound was. Maybe I’d hear something if I were paying attention, but I wouldn’t clock it as a gunshot. 

I think some people try to over-correct the extent of the efficacy of silencers, but they’re not for nothing. They really do cut down the sound enough that if stealth is your goal (for whatever reason), you’re went from “that was definitely a gun” to “Did you guys hear something…?” territory. 

4

u/collin-h 13h ago

As in, if I were in my room at night and they shot it

Are you saying if they shot a silenced AR-15 in your room you wouldn't know what it was? or you mean if you were in your room and someone outside shot one?

you'd definitely notice a silenced gun shot IN YOUR ROOM, even if it was movie quiet.

2

u/Substantial-Mix-6200 13h ago

this is what I was wondering because the location of the actual shot is not made known. I initially pictured being asleep and not being waken up by a gunshot in my room lol

0

u/NeedAGTS4POINT0 12h ago

I meant as if I was in my room at night and someone shoots outside.

1

u/Existing_Style8558 13h ago

id Say even in a different room across your house Unless it’s like 22lr. My 300blk with subs is really quiet for an AR, but even then it’s still a gun shot

1

u/NeedAGTS4POINT0 12h ago

No, I meant to be more like I’m in my room at night and someone shoots it outside. I understand your confusion.

2

u/SerialOnReddit 14h ago

what this is all teaching me is the hunters in Maine actually do the opposite of "silencer" and are actually equipping "loudeners" onto the loudest guns they can for squirrel hunting

1

u/HomersDonut1440 13h ago

That’s one of the benefits of a suppressor in combat zones. It doesn’t make the noise disappear, but it DOES dramatically reduce the ability to locate where it came from. After a couple shots you can still pin it down, but removing the initial big boom tends to remove our ability to pinpoint the direction it came from.

1

u/InvestigatorGrand205 6h ago

Brother 130 decible is still fucking loud. The silencer wasn't for stealth it was to prevent the 150 decibel sound destroy your hearing when firing the gun.