Suppressors Sound reduction for a .308 suppressor??

bitter24

bitter24

Sergeant
Full Member
Minuteman
Sep 20, 2010
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Sierra Vista AZ
#1
Im sure this question has been ask'd somewhere before so if so please just refer me to that post!

Otherwise! Im looking to get a can for my DPMS SASS. the YHM phantom can im looking at says it has -32DB. Is there a huge noise difference with and without?

I know guys say with a .22LR all ur here is the click of the hammer, though with a .308 what noise level do you get?

From my looking around most .308 are in that 160 DB level so does that mean it will be around 130? Simple math though now a days nothing seems simple! LOL

I know all of you guys say get a can, the reason Im looking into a can is pearly for the noise (yote hunting at night, and range time)

I wish you could try them out with out buying so that way I would know how loud it is with it on versus it off.

Thanks Bitter
 
#2
Re: Sound reduction for a .308 suppressor??

most suppressors attenuate the noise about 32-35db. most suppressor manufacturers do not publish these numbers. some of those who do, do not follow the standard testing procedure and publish 40db or higher attenuation for the purpose of deceiving a gullible consumer.

i have a few (very expensive) cans and they all sound about the same. the most discernible difference is the ease with which they attach/detach, and hold zero.

check this website for in depth discussion of the subject:

http://www.silencertalk.com

my favorite can is the Surefire.
 
#3
Re: Sound reduction for a .308 suppressor??

..

Bitter,

I am already troubled by the majority of what you wrote.

What does this mean? " Is there a huge noise difference with and without?"

This statement is incorrect for all but one kind of suppressor if using standard ammunition. " know guys say with a .22LR all ur here is the click of the hammer"

IMO, you need to start here and certainly not on silencer talk. Silencer talk might comes later and definately only after you better understand dB readings and the real limitations it contains. dB is a part, only part of the formula and taken in context, as you will see.

http://www.xtranormal.com/watch/8176267/


To answer your question (if I understand it) what is possible with suppression is so remarkable that the end result can be quiet beyond your wildest expectations. But your platform (in your case a gas gun), your suppressor, potentially your ammo, your range requirements, the speed to follow up, and most importantly your accuracy can all be beneficially effected as a whole host of other issues come into play.



..
 
#4
Re: Sound reduction for a .308 suppressor??

Rollingthunder52,

Please explain to me then? I do not know a whole lot about this topic hence why im just starting. And too be honest IDK if that is correct hence why i stated i HEARD, not witnessed.

Im looking for info on this topic, I know suppressors are not a silencer. All they do is lower the DB level of the shot along with help manage recoil. Do they do either to a perfect no sound or no recoil no. If you want that you need to go with a true silcener or a high end break but then you get one or the other. With a suppresor you get a LITTLE of both.

Please help explain this to me......if im way off base...and i am going to go to the link and watch it
 
#5
Re: Sound reduction for a .308 suppressor??

..


Watch the link I sent you and then try again. You are exactly where we all were, in my case 35 years ago. Your doing the right thing. Get a foundation, first.


..
 
#6
Re: Sound reduction for a .308 suppressor??

Ok so watched that link and WOW even the basic's are a lot.

Now im just really confused. So depending on the gun, the round, the powder burned. etc etc all comes into play with the overall sound heard. Since DB dont fully mean what the suppressor does. Plus you have accuracy issues depending with what rounds and suppressor you use????

I have a lot to learn clearly I understand that. Hence why Im hear. Hoping to get some insight
 
#7
Re: Sound reduction for a .308 suppressor??

..

Great,

All "silencers" are "suppressors".

Great "suppressors" are capable of getting damn close to silencing the blast of some calibers. Some can make the bullet subsonic, quieting the supersonic signature of the bullet. Some will not allow the action to cycle (stopping that noise) by design. Other want the action to cycle and don;t care about the noise.

Blast is the majority of the noise.

To attend to the projectile signature, we either reduce the load to subsonic or use regular velocity rounds in a special type of suppressor called an "integral" that actively brings the barrel design into the suppression cycle. The barrel is used to tap gas off the cartridge, slowing its speed until it is subsonic.

Lastly, reduce the noise associated with the cycling of the action and one is only left with potentially the slightest of sounds, plus...the sound the bullet makes when striking its target and the noise the operator might make.

Your on your way now.

When somebody tells you on a .22 you only hear the hammer we already know:

1. It has excellent "blast" suppression
2. The bullet must be subsonic, or the suppressor was an intergral (tapping off gas until the bullet was subsonic).
3. There is no action noise.
4. The target was either far enough away that its being struck was immaterial in regard to noise or the target was soft.
5. The operator was quiet.

Now, its New Years so I'm going to get suppressed.....

Good luck, your only challenge now is hearing as many different cans and makers as you can. Your rifle can be made very very quiet with the right selection of suppression. YHM, AAC, SHARK, SAS, AWC, SUREFIRE, GEMTECH, LIBERTY, KNIGHTS, etc. etc. etc. all definately worth hearing as many as you can. Materials, designs, attachment, finishes, all worth understanding.

Take your time.
 
#8
Re: Sound reduction for a .308 suppressor??

Ok so then say i get the YHM Phantom.

No matter what I will have the noise of myself, the action cycling, the sound of impact the bullet makes when striking target, and the sounds of the bullet being sonic speed. Unless it is a integral design which will allow to shoot "standard" rounds but slowing it speed to sub sonic level.

The question I have is taking all that into effect. The sound I hear now minus the crack of the bullet going sonic speed will be affected. Though with a suppressor on it how much will the sound of the gas escaping from behind the bullet will I hear?

Is that a better way to ask my question?
 
#9
Re: Sound reduction for a .308 suppressor??

..

Much better,

The answer is now a matter of hearing individual cans as they really do go from poor to remarkable.

But, I would say this to you. No cartridge disappoints more than the .223 when it comes to suppression. This is the result of the frequncy of that round. It is a hard round to really suppress the muzzle blast. A fair/good .223 suppressor, shooting full velocity rounds will reduce the sound to a level below that of an unsuppressed .22. A great suppressor will reduce that level even farther. Once the can heats up, that will begin to get louder.

Understand this. A great .50 caliber suppressor will reduce THAT round at full velocity to below a .22 as well. This is truly a remarkable feat.


Does that help?
 
#10
Re: Sound reduction for a .308 suppressor??

That does help a lot actually.

I just wish I could try out different suppressor's before buying so I can find one that works for my .308

I have heard guys on here say they like the YHM Phantom, the question is still I dont know if it will work on my weapon though. Im guessing it is like anything else the more you pay the better the product (normally)

So with a fair/good suppressor should lower heard sounds from muzzle blast to about 22LR or just higher then?
 
#13
Re: Sound reduction for a .308 suppressor??

..

For .223, my opinion is:

I do not buy .223 suppressors made out of Chrome Moly
I do not buy .223 suppressors that are parkerized.
I do not buy .223 suppressors that weigh 20 oz.
I only buy .223 suppressors that are fully 360 welded and I buy deep penetration weld.
If I buy mono core cans, I have to see the baffle designs.
For accuracy, I do not buy quick detach cans.

Others would strongly disagree for a whole host of defendable reasons.

But now you have a bit more to learn about.

In short, I would not buy that model YHM.

I'm outta here now. Keep at it.
 
#14
Re: Sound reduction for a .308 suppressor??

Ok so as in general for everyone else can anyone tell me what the heard sound difference from muzzle blast with a suppressor versus without. I know what a .308 sounds like without what will be a comparable sound with a suppressor on? Are we talking .22 level .223 level noise heard? This got very in depth I know I have a lot to learn just asking simple straight forward question on heard sound not taking into affect all sounds outside my control?

Does anyone shoot with the YHM?
 
#15
Re: Sound reduction for a .308 suppressor??

I will give my opinion regarding your question. A suppressed .308 with a standard round, specifically my AAC Cyclone K and 175 SMK over 43.5gr of Varget, to my ear sounds quieter than an unsuppressed .22LR behind the rifle, and even quieter when standing behind the shooter. Behind the rifle, felt recoil is diminished somewhat, accuracy is slightly improved, and though my ears do not ring when shooting it, I still wear hearing protection.

Now with subsonic ammunition, 190gr RN over 10.3gr of Trailboss, it sounds very similar to a GAMO air rifle, felt recoil is very slight, and it is hearing safe.
 
#16
Re: Sound reduction for a .308 suppressor??

Bitter,

There is no substitute for hearing the many offerings yourself. I would encourage you to hear as many offerings for yourself in the same session as you possibly can. Everyone has their own opinions. A test drive is truly required the best way. Failing that, try and experienced dealer that will divine what your needs are, not what he has on the shelf to sell. There is no "best", only "best fit".

Best of luck on your project.

www.deltapdesign.com
 
#17
Re: Sound reduction for a .308 suppressor??

You should go hear a silenced 30 cal rifle for yourself, we do not know your hearing loss, or what you think loud is.

I have used the YHM Phantom and AAC Cyclone, and 7.62 SD and other 30 cal silencers.

If you are shooting no silencer now you will be happy once you get one.

The quietest spot of a silenced rifle is the shooter, yes the sonic boom makes a noise but it is flying away from you at 2700fps and it only lasts a short while. Shooting a steel gong at 500yds will be louder than what you hear from the sonic crack as the shooter.

The loudest point will be as the target, 200yds down range if the bullet flies by you, it will be loud, but the sound comes perpendicular to the flight path, so you will look for your assassin to your side not towards the shooter, you as the game animal often are driven towards the shooter to get away from the boom.

I would say go with Stainless Phantom over the regular steel, the biggest thing you are giving up with the Phantom over AAC is weight, If you need light weight you are going to pay.
 
#18
Re: Sound reduction for a .308 suppressor??

Thanks for the info guys...Is there anywhere you can go and try them out??

I think that would be the best as well but trying to find somewhere that I can do that is easier said then done...do you guys have the ability to shoot from your dealers??
 
#19
Re: Sound reduction for a .308 suppressor??

..

1. You walk into your dealer, lets say his name is David.

"David, look I would like very much to buy my suppressor from you. To be honest, I will want to hear a number of suppressors before I buy one. You must have sold a number of suppressors to others in the area. Would you consider asking anybody that you know fairly well if the next time they go out, that they allow me to tag along as well? I would appreciate it. Or if you can think of a place where people shoot suppressors, well I would really appreciate it. The best person would be a person with a .223 gas gun and a can that you think represents the best performance. "

If not:

http://nfadealers.com/

http://fflgundealers.net/transfer/wisconsin/

http://www.hk94.com/directory/nfa/Wisconsin/


..
 
#20
Re: Sound reduction for a .308 suppressor??

Not always as easy as you make it sound rollingthunder.

First off theres not many shops around me that sell suppressors. Also, the guys to deal with since they have been recommended from other hide members are at least a hour away.
 
#22
Re: Sound reduction for a .308 suppressor??

Im not gonna go back and forth with you...it was just a point that there not readily available. i dont want to take my own thread way off base. You clearly know a lot and are either trying to show off..or be cocky. Which neither is why i am here. I do appreciate any help ANYONE gives me and with topics I dont know much about I come in with open ears.

Thanks guys for all the info
 
#23
Re: Sound reduction for a .308 suppressor??

..

Your welcome.


That was my best graceful exit but with a show-off <span style="font-weight: bold"><span style="text-decoration: underline">and</span></span> kinda cockey swagger.....

FrankRicksmileSm.jpg



Appreciation, it ain't what it used to be...
..
 
#24
Re: Sound reduction for a .308 suppressor??

Bitter,
I too have a DPMS SASS and wanted to suppress it, after many hours of reading and trying to become somewhat suppressor savy I decided to go with the YHM Phantom.I guess one reason was cost but another was their lifetime warranty and their great customer service and being able to move it from rifle to rifle with the QD. I was fortunate that a bunch of my shooting partners run cans so I was able to try out alot of em before I bought one and ya know I just cant see paying 4,5,6 hundred more for a can that I personally cant tell much of a difference in. As far as accuracy is concerened, My SASS is Incredibly accurate with or without the can. My P.O.I moved 2 Min. straight down so thats not very confusing when running it unsuppressed. My biggest problem has been to get my rifle to run reliably with the can! From what I've heard the DPMS rifles are overgassed and that causes problems when running a can. I tried a Tubb's spring and that didnt work and just today I got my new heavy Buffer/spring from Slash so I hope that takes care of my problem. As far as the noise level is concerend on the SASS it's a little more than I want without hearing protection(Bout like a 22mag, But I do have hearing damage from having my ass blown up a few years back so I wanna take care of what I have left) but when I put it on my 16" 223AR its no louder than a 22 and a blast to shoot! One more thing, The SASS is heavy without the can and it seems like it adds 10lbs to it with the can so If yer gonna hunt with it I suggest buying yourself a BigAss box of Wheaties!

Good Luck
Doug
 
#25
Re: Sound reduction for a .308 suppressor??

The only way to really realize how a suppressor sounds is to hear one on a rifle of similar style shooting similar ammo to yours.
You really can't go by a -db number unless you work with sound enough to know what a db actually represents, you can't go by a video on the internet cause most cameras don't represent audio properly, and you can't go by what someone compares the noise to cause who knows, their hearing might be shot.
Find another excuse to go to the area where these dealers are, try calling ahead to make sure they at least have something on hand that you can hear. If it's a dealer that wants to make a sale, he will likely have a personal suppressor that he might let you hear at some point and time after hours if they don't have a range handy.
After that, take the numbers posted online for the cans you've heard and swallow them with a grain of salt. Compare how they sounded to you, with the numbers you see online. You could find that Suppressor X with -35db sounds louder than suppressor Y with only -28-29 db reduction. Everyone hears at slightly different levels and we all hear pitches differently. Who cares how a suppressor sounds to someone else, you're shooting it.

Yes, the phantom is heavy, heavier than a lot of them (maybe even most of them) but like DougW said...I eat Wheaties that come in the BigAss box
grin.gif


I have a 7.62 Phantom QD and it works great on my 243WSSM
 
#26
Re: Sound reduction for a .308 suppressor??

I think the hour drive to

Recon Ordnance Company

Attn: Jerry Prasser
Specialties: Class 3, Type 10 Destructive Devices
P.O. Box 829
Fond du Lac, WI 54936
Phone: (920) 922-1515
FAX: (920) 922-0737
E-mail: [email protected]
Homepage: N/A

would be well worth the trip, to avoid making a mistake of buying the wrong silencer.
 
#27
Re: Sound reduction for a .308 suppressor??

All great points c_bass16... this one needed repeating.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: c_bass16</div><div class="ubbcode-body">

you can't go by a video on the internet cause most cameras don't represent audio properly </div></div>


I use a SEI/Fisher M14-DC suppressor on my M14s and 7.62mm AKM. They are available from Fisher Ent.

<span style="font-size: 14pt">YouTube video</span>

It may not be the shortest, lightest or quietest suppressor available, but it's built like a tank, it's field rebuildable and it works.
I fired almost 300 rounds that day, wore no hearing protection and suffered no ill effects.



.
 
#28
Re: Sound reduction for a .308 suppressor??

I'd take David's advice. Jerry is one of the nicest guys in the C3 business. Bought many a MG from him and handled transfers for some of his buyers.

It would be well worth your time to visit his shop.

There really is no substitute for checking them out first hand. Have you thought of posting in the SH Member Link-up section? There might be a member willing to help near your location.
 
#30
Re: Sound reduction for a .308 suppressor??

Thanks for all the info guys! Sure are answering my question! And Burn no didnt think of that thanks for the advice!

Also I know what POI is and I know what it means to be overgassed. But thanks, I have read in other areas as well that will a suppressed SASS it took a lot for them to get running properly and it seems from what I read the buffer spring normally helps otherwise some guys were going with a heavier Bolt carrier

And yea I hear ya the weight of the DPMS is a lot already but just like yours mine is super accurate as well! Guess its a good thing Ive been working out lol. And I also have hearing loss and that is the main purpose of me looking into this route!

And david: Thanks for that info Fond du lac is actually closer to me by a lot!!

Thanks again guys
 
#31
Re: Sound reduction for a .308 suppressor??

Bitter:

Lots of good advice in here. Don't expect a 308 can to suppress much more than 31dB with full power ammo. I just ordered a Liberty Freedom of a Snipershide group buy since it did the best for a 1.5" diamter can on SilencerResearch.com. Might want to get a subscription to that site. Cheap for unbiased research. As other folks said, dB isn't the final say on how something sounds, tone is important too. But dB is a place to start. YHM can's are bombproof but they're kinda considered budget cans. I really like Liberty products and service. Plus they're not all into the military attitude like some manufacturers.

As others have said, 223 suppressed performance is a disappointing proposition. 223 is just hard to suppress. With my Buddy's Gemtech HALO, we still wear hearing protection when suppressed. So even if you have a 223, stick with a 308 can first and shoot 223 through it. Maybe one day 223 cans will improve.

My only experience thus far with 308 cans in person has been a Gemtech HVT. Was pretty impressive with full power ammo. Definitely hearing safe in a bolt gun. near-Hollywood quiet with subsonic 308 out of a bolt gun. Gas guns are a bit of diappointment suppressed in my opinion, due to action noise and gas released by the gas system. Bolt guns are much quieter.

And I don't think i'd believe anyone that told you that they ONLY heard the hammer fall on anything but 22LR subsonics or CB Longs in a bolt gun. My Liberty Kodiak TL is that quiet on my CZ452 but only with CCI CB Longs.

Happy searching!

-David
Edgewood, NM
 
#34
Re: Sound reduction for a .308 suppressor??

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: H2O MAN</div><div class="ubbcode-body">I use a SEI/Fisher M14-DC suppressor on my M14s and 7.62mm AKM. They are available from Fisher Ent.</div></div>

I find that most interesting?
 
#35
Re: Sound reduction for a .308 suppressor??

Well, you have to consider reduced blast, muzzle flash, etc making it more comfortable to shoot.

I have a YHM suppressor on my 26" bbl Savage & 16" bbl AR in .223. The Savage sounds like a pellet rifle but the AR sounds like a .22 Mag. The AR is just short of needing hearing protection. The same suppressor on a .22 LR pistol (5" bbl) sounds like a cap gun.

To me it seems like barrel length and muzzle velocity make all the difference.
 
#36
Re: Sound reduction for a .308 suppressor??

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: nmmi9100</div><div class="ubbcode-body"> ...stick with a 308 can first and shoot 223 through it. </div></div>

I am going to do this as soon as my Daewoo K2 arrives and I get the correct DC Vortex installed.
 
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