June 29th, 2009 12:15 PM
How loud is your gun?
How loud is your gun?
Table 3. CENTERFIRE PISTOL DATA
.25 ACP 155.0 dB
.32 LONG 152.4 dB
.32 ACP 153.5 dB
.380 157.7 dB
9mm 159.8 dB
.38 S&W 153.5 dB
.38 Spl 156.3 dB
.357 Magnum 164.3 dB
.41 Magnum 163.2 dB
.44 Spl 155.9 dB
.45 ACP 157.0 dB
.45 COLT 154.7 dB
Table 2. CENTERFIRE RIFLE DATA
.223, 55GR. Commercial load 18 _" barrel 155.5dB
.243 in 22" barrel 155.9dB
.30-30 in 20" barrel 156.0dB
7mm Magnum in 20" barrel 157.5dB
.308 in 24" barrel 156.2dB
.30-06 in 24" barrel 158.5dB
.30-06 in 18 _" barrel 163.2dB
.375 — 18" barrel with muzzle brake 170 dB
Table 1. SHOTGUN NOISE DATA (DECIBEL AVERAGES)
.410 Bore 28" barrel 150dB
26" barrel 150.25dB
18 _" barrel 156.30dB
20 Gauge 28" barrel 152.50dB
22" barrel 154.75dB
12 Gauge 28" barrel 151.50dB
26" barrel 156.10dB
18 _" barrel 161.50dB
Source FreeHearingtest.com - Gunfire Noise Levels
the damage caused by one shot from a .357 magnum pistol, which can expose a shooter to 165 dB for 2msec, is equivalent to over 40 hours in a noisy workplace. Dr. Krammer, Ph.D., Ball State University, Muncie, Indiana
Last edited by ErikGr7; June 29th, 2009 at 12:19 PM.
Reason: forgot something :D
June 29th, 2009 12:24 PM
June 29th, 2009 12:26 PM
WHAT??? SPEAK LOUDER I CAN'T HEAR YOU!?!
...Sorry, couldn't resist
"I didn't do it, nobody saw me do it, you can't prove anything!" Bart Simpson
June 29th, 2009 12:29 PM
I see you have been shooting either the .357 or .41
Originally Posted by BradyM77
June 29th, 2009 12:37 PM
Actually most centerfire handgun cartridges are closer to the 160-165db range. An M16 is 165dB and the 45 ACP is as well.
Recall the dB scale is not linear, it's logrithmic, so the difference between 2 and 3 dB is greater than the difference between 1 and 2 db.
I shoot suppressed almost exclusively so all my gun shots range from 115db to 125db (22 rimfire to 223 centerfire).
June 29th, 2009 12:45 PM
Have any data on the .22mag, .357SIG and 10mm? Dang loud rounds also.
June 29th, 2009 12:57 PM
Correct, it is logarithmic. There are also several variables not listed that always make these tables suspect to me, such as barrel length, instument placement/type, very specif load info, etc.
Originally Posted by Tubby45
Consider it a ROUGH estimate though, and it's illustrative to a point.
June 29th, 2009 01:23 PM
Eh, considering the fact I used to work in 180dB work areas 150-170 seems tame. Still I lost enough hearing already, Im wearing good set of earplugs or headphones.
I know not what this "overkill" means.
Honing the knives, Cleaning the longguns, Stocking up ammo.
June 29th, 2009 01:46 PM
You must be a fellow welder
Originally Posted by TerriLi
Grinders are loud..
I had to air arc a lot on the railroad. That hurt
with plugs in too.
June 29th, 2009 01:55 PM
It's loud, but not TOO loud. I would certainly recommend anyone who is carrying for defense to try shooting their handgun (at an outdoor range) without ear protection, just to see what it's like*. You don't want to fire your first shot and then stop to think "holy ***** that was loud!", instead you want to be expecting it to be what it is
*I am not a doctor, so do this at your own risk
"Trust in God with hand on sword"
-Inscription on my family's coat of arms from medieval England
---Carry options: G26/MTAC, PF9/MiniTuck, PPK/Pocket, USP40/OWB---
---NOTE: I am not an expert. If I ever start acting like a know-it-all, please call me on it immediately.
June 29th, 2009 01:57 PM
The difference between 2 and 3 db is 1 db. The difference between 1 and 2 db is 1 db. The subtraction is the same.
Originally Posted by Tubby45
But I think I know what you are saying. A 3 db increase is not same as going to a 3 on a knob that is scaled from 1 to 10.
Think of it this way, if you are putting out 25 watts of power (I'm an RF guy), a 3 db increase means you are now putting out 50 watts of power, twice as much.
June 29th, 2009 02:14 PM
The difference is the value but the actual sound pressure level (more correctly db SPL) the thing that is being measured, is exponential.
2 Pa (sound pressure) is about 100 dB (sound pressure level) in air. 20 Pa is about 115 dB and is the threshold for hearing damage for short exposure. You can see here a change of 15 dB is an increase of 19 pascals of sound pressure. The ratio of increase in pascal versus decibels isn't fixed (linear) such as a 1:50 Pa:dB.
June 29th, 2009 02:38 PM
I know my guns are loud, that's why I wear earplugs.
In an SD situation, I don't think it will matter. I hardly even hear my shotgun or rifle go off when I shoot game animals. (and my rifles are really loud) The adrenaline seems to reduce the noticable effects somehow.
When you've got 'em by the balls, their hearts & minds will follow. Semper Fi.
June 29th, 2009 02:41 PM
It's called auditor exclusion and is common during high stress situations. Your body suppresses low priority senses and skills to allow gross motor skills to take priority.
June 29th, 2009 02:52 PM
I can vouch for a .357 magnum going off in an enclosed room as being VERY LOUD.
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