suppressor db reduction comparison suppressor db reduction comparison

We chose a pair of popular bolt action hunting rifles as suppressor platforms. The actual model used was the Larson Davis Model LxT1-QPR Sound Level Meter. Some of the worst performing suppressors were all over the board on price, ranging from surprisingly very cheap ($200) to breaking four figures, while the better performing .308 suppressors are priced between $700 $1000. A longer barrel allows more time for the powders and gases to burn before escaping the end of the muzzle. Note the further you are away from the sound source, the quieter it is. dB full configuration MSRP: $925. We are Currently experiencing issues with text notifications. With an average reduction of 41 dB, its easy to see why so many people enjoy shooting this caliber with a silencer. He is a graduate of the University of North Carolina-Chapel Hill and holds a Masters in Business Administration (MBA) from Duke University. Well, that helps with accuracy. While we definitely recommend using hearing protection, every shooting situation is different and ear-pro may not always be an option. This field is for validation purposes and should be left unchanged. Pay a one time $200 Transfer Tax Stamp fee. Firearm silencers are so similar to mufflers because the inventor, Hiram Percy Maxim, actually helped with a lot of the research for improving automobile and industrial silencers. The perfect Goldilocks rifle suppressor that will take all kinds of calibers and abuse. For instance, the following chart identifies temperatures and the corresponding velocity at which the speed of sound is broken: Most rifle ammunition is manufactured to produce supersonic speeds, although there are some exceptions. When youre ready to buy a new suppressor (or even your first suppressor), give us a call. OTM ammo. ), Then their is the noise of the projectile ripping thru t. Our tests showed 12 different suppressors that failed to drop .308 rounds to the 140 dB or lower threshold that is considered hearing safe. Please check your email for status updates. While it is a reduction of almost 25 dB, the sound of a suppressed .308 load will still result in hearing damage if additional ear protection is not worn. The pistol started out much louder at 155.7 dB with Federal ammunition and 154.45 dB with Remington Subsonic. This is commonly experienced by many people when shooting a firearm. Let your fellow shooters know share this article using the Facebook, Twitter and other social media icons below. If youve ever spent time at the range or in the field hunting, you probably noticed how your shoulder was somewhat tender the next day due to the recoil of the firearm. Testing shows the BANISH 45 suppresses a 9mm pistol by 36 decibels far more sound reduction than the competition. A suppressed gunshot, while still quite audible has not become associated with a kill, and many hunters in areas with large amounts of predators prefer hunting suppressed. This new model in the Saker series offers a significant reduction in the decibels than its predecessors, thanks to the new Saker being roughly 1.5 to 2 inches longer than the original one. Thats an average reduction of 36dB between the unsuppressed and suppressed shots. Silencers can help soften these noises from personal and public ranges, as well as hunting properties. For 2022, the top 5 best 22 suppressors are a mix of three returning favorites and two new additions. This means that the forces that cause felt recoil are diminished at the same time the gas is prevented from pulling the barrel as far up as it normally would. A suppressor does not fully silence a firearm but only works to reduce the sound when a gun is fired. For more than 15 years, Silencer Central has been helping people find the right suppressor for them, and were the nations largest silencer dealer and the only one thats licensed to sell in all 42 suppressor-legal states. Megan, Maddoxs wife, is a 5th generation South Dakotan, and together they have two daughters. YHM 9mm Sidewinder. } The 22 TAKE DOWN is 5.6 inches long by one inch in diameter and weighs 5.9 ounces. Accuracy in shooting makes for more humane and efficient hunting. Yet, at 4.1 ounces it does little to tip even compact .22s out of balance. But, if theyre are so horrible and deadly, why isnt there a thriving black market for silencers and a plethora of crimes to connect them to? join_popup.classList.add('gbda-generate-lead'); //CRO classes for Join Our Inner Circle popup . Sound reduction of the same Suppressor but on a smaller caliber (.223) Note: the Banish 30 was previously named the Varminter 4.0, and in this article. 9 a.m. - 5 p.m. (CT). When used in action films, the bad guys are usually running around gunning down their targets, all while remaining undetected due to the whisper like sound levels of theirevil guns. Its very natural to flinch in anticipation of loud sounds or movements, its in our genes. Generally, suppressors drop about what ~30dB. Silencers mainly focus on controlling the sound level emitted from firing a round of ammunition. Contrary to the term, silencers do not completely silence a firearm. Call 888.781.8778, 5 Reasons to Start Shooting with a Suppressor Today, Can You Borrow A Suppressor? Teddy Roosevelt was fond of using a suppressed rifle for pest control around his upscale mansion. The same goes for hunting. They are heavily regulated, just like actual machine guns, under the National Firearms Act (NFA) of 1934, which falls under the scope of the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF). For context, a police car siren is about 120 dB, an alarm clock about 80 dB, and a car horn around 110 dB. Suppressors have surprising safety benefits for hunters. The Remington Model 700 in .308, and a Tika T3 .223 varmint rifle. In other words, the numerical majority of .30 caliber suppressors we tested are hearing safe for .308 or .223, proving the wisdom of buying one suppressor for multiple calibers. True multi-caliber suppressors like our BANISH 30 suppressor may be desirable to most, as they can be configured for any rifle caliber from .22 to .308 by simply changing the front end-caps. By redirecting and cooling the fired gases, silencers are beneficial in mitigating the overall recoil felt by the shooter. Be legally eligible to purchase a firearm. join_popup.classList.add('gbda-generate-lead'); The amount of reduction is based on many factors including: firearm model and features, ammunition used, and suppressor design. By using a silencer or suppressor, you can also greatly reduce, or in many cases eliminate the bright muzzle flash caused by the burning gases exiting the barrel. 140dB is the threshold of pain. Let Our Experts Guide You. Silencer Central can order and sell just about any silencer under the sun for you, but we wanted to take a closer look at our own line of suppressors and show you how they perform in terms of decibel reduction in a variety of circumstances on different firearms in different calibers. What began as Maddoxs home-based Federal Firearms License (FFL) evolved into a Class 3 Dealership and has grown into the nationwide brand it is today. It also doesnt take an Audiologist to understand that constant exposure to loud noises can lead to hearing loss. Dead Air Sandman Ti: 37 dB reduction . OTM, The Best Self Defense Ammo Ballistic Testing. If you are not 100% satisfied with your suppressor after your Form 4 is approved, you may return it to Silencer Shop for afull refund(in the form of a Gift Certificate) of the silencer (minus Tax Stamp) within 90 days of your Form 4 approval date. }); document.getElementById( "ak_js_2" ).setAttribute( "value", ( new Date() ).getTime() ); Please enable JavaScript in your browser. Using two premium bolt action rifles, and 27 different silencers, ranging from the Varminter 4.0 (now the BANISH 30 multi-caliber suppressor) to leading competitors, we found that yes, you can get meaningful results with a .30 caliber suppressor on a .223 rifle. What began as Maddoxs home-based Federal Firearms License (FFL) evolved into a Class 3 Dealership and has grown into the nationwide brand it is today. Top 7 of 300 Blackout Suppressor Reviews 1. Using 1/228 threads for direct attachment, the BANISH 22 is made of lightweight titanium, weighs just 4.1oz, is 1 in diameter, and is only 5 long. Because sound travels through air, anything that impacts the density of the air also impacts the loudness of a given sound. As far as sound measurements are concerned, we can cite decibel(dB) levels all day, but unless we have something to compare them to, the numbers are somewhat useless. Doing away with the need to wear bulky hearing protection instead of sacrificing your situational awareness in the woods in order to protect your hearing. Suppressors do more than just muffle sound and reduce felt recoil. This method of measurement is also referred to as linear or unweighted. In fact, until the ATF made it faster for wholesalers and manufacturers to transfer silencers to dealers, such a test would have been a nightmare of paperwork and logistics. The earliest suppressors were promoted as noise pollution reducing devices. For ammo, we chose bulk Winchester brand ammo from Walmart in order to test with what is most commonly used in these suppressed hunting platforms. Our industry experts will take your calls and answer your emails in order to match you with the perfect suppressor. One popular choice is using a .30 caliber silencer to shoot rounds such as .308/7.62 NATO, and 300 AAC BLK, but also using it to shoot smaller .223 and 5.56 NATO rounds. Well, we've spent a couple of days crunching numbers and the results are finally in! What we found was pretty surprising. Clip argument, there are staunch advocates in favor of never using the term silencer when discussing firearm suppressing devices. The same ammunition fired with a suppressor came in at an average of 148.4 dB. When shooting with a silencer, the levels come in at an average of 135-145dB. The suppressed Sig P226 conversion gave us an average of 120-128 dB for all ammo tested. The best part is that the length of this silencer can be reduced further to 3.1 inches from 4.6 inches. Although, the warmer it gets, a greater velocity is needed to break the barrier. My guess on the subsonic velocity increase is that the Remington ammunition is using a slow burning powder that continues to propel the round through the suppressor. An unsuppressed .308 running a 20 barrel will produce about 170 dB of sound. Thats because the silencer is preventing the gasses that cause felt recoil and muzzle climb from doing anything but drop in pressure and vent directly out of the front of the gun. Made of titanium for the ultimate combination of durability and weight reduction, the BANISH 45 is the lightest in its class at a mere 9.6 oz in the short configuration of 6.7. This allowed for variables like slight differences in manufacturing on the rounds, the effects of the gun and silencer heating up when fired multiple times, and reflects real world sport shooting and hunting rates of fire. 3. Copyright Ammotogo.com 2023 All Rights Reserved. To legally purchase or possess a silencer you must meet the following criteria: At the time of writing this article, the following42 statesallow citizens to own a silencer for personal use: AL, AK, AZ, AR, CO, CT, FL, GA, ID, IN, IA, KS, KY, LA, ME, MD, MI, MN, MS, MO, MT, NE, NV, NH, NM, NC, ND, OH, OK, OR, PA, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY. Here it is in action: Manufacturer Specs: Decibel Rating: 130.1 dB (5.56) Rating: 5.7mm to 300 Win Mag Weight: 14oz Diameter: 1.56 Length: 7.09 Construction: Titanium + Cobalt 6 + Stainless Steel Mount: Bravo threaded Most Popular SilencerCo Omega 300 865 What began as Maddoxs home-based Federal Firearms License (FFL) evolved into a Class 3 Dealership and has grown into the nationwide brand it is today. You often also gain public goodwill from quieter shooting sports. The BANISH 30 multi-caliber suppressor (formerly Varminter 4.0) was among the absolute best performing, along with the Yankee Hill Machine Resonator which reduced .308 down to a mere 134.5 dB, and the TBAC Ultra 9, which drove .223 down to an impressive 132 dB. Whether the driving factor is to preserve their own hearing, to avoid spooking wild game, or to be courteous to those around them, the end goal is all the same. The same principle applies to shooting on personal property or rural gun ranges. Its a level most people wouldnt typically expect to see from these tiny little rounds. Ok, so I am considering a purchase of a AAC 762-SD for use on a Tikka T3 (20 in Barrel) in .223. Get free updates when we add new tips, articles and more! You may also reference our up-to-date map below to understand where you can hunt with suppressors. As of 2018, Texas is the leading state in silencer ownership, with just over a quarter of a million registered devices. Today, with urban sprawl moving housing closer to many once isolated shooting ranges, the need for polite, quieter shooting is more important than ever. A suppressor (silencer) lowers the sound of gunshots by an average of 20-30 dB. Now, a lot of variables impact how loud a gun sounds. Megan, Maddoxs wife, is a 5th generation South Dakotan, and together they have two daughters. What began as Maddoxs home-based Federal Firearms License (FFL) evolved into a Class 3 Dealership and has grown into the nationwide brand it is today. Available to help: Mon-Thur. Modern muzzle-level suppression is vastly superior to ear-level protection and the only available form of suppression capable of making certain sporting arms safe for hearing.. In case you haven't read about our testing, we ran9 suppressors through 2 guns with 2 types of ammunition - which resulted in a lot of data. According to research by Paul A. Clark, from 1995-2005 there were only 153 federal convictions in which a silencer was used during the commission of a crime. As a result, the BANISH 223 suppressor is optimized to run on that platform. The type of silencer used, firearm/caliber choice, ammunition being fired, even temperatue and atmospheric conditions can all impact the overall sound a firearm emits. Slime and light, the aluminum suppressor is nearly unobtrusive on most firearms. It is a testimony to modern silencer design that a .30 silencer can work well on say a .270 or a .223 gun. Unlike gun shops that sell silencers as well as guns, ammo, accessories, etc, silencers are all that we sell. Or, in this case, perhaps its better to say that people want to get the least bang for the buck. The Hearing Protection Act of 2017, Sportsmens Heritage and Recreational Enhancement (SHARE) Act, and SHUSH Act, although unsuccessful so far, have sought to amend the current laws to deregulate and treat silencers like other firearm accessories. Our Suppressor Db Level Comparison Test Testing Method and Equipment Silencer Central uses only military grade test equipment for accurately measuring sound. In an effort to offer our customers the best suppressors money can buy, we set out to create our own line of suppressors. All testing was completed away from any reflecting surfaces, as to not negatively affect the audio readings. On average, you can expect anywhere between 23 to 36 decibels of sound reduction when using a BANISH suppressor. Along with the one that fits any gun the BANISH 30 multi-caliber suppressor, we carry a full assortment of suppressors by all leading manufacturers. Brandon Maddox, CEO and owner of Silencer Central, is recognized as a national thought leader on Class 3 firearms. Long term exposure to loud noises over 85 dB can cause hearing damage as well. In return, the shooter can overcome the instinct to flinch and achieve better shot placement at the range and more humane kills when hunting. Plus, its just plain nice to have a quiet shooting session. Suitable for 7.62 caliber rifles with a 5/8-24 thread, this suppressor from SureFire will provide a 99% flash reduction compared to a plain muzzle. All Rights Reserved. One of the first things people notice when using a silencer the first time is how much recoil and muzzle climb is reduced. We know what a .30 silencer can do on most common .30 rifles. https://www.ammunitiontogo.com/lodge/wp-content/uploads/ATG-silencer-cartoon.webm, benefits of using in- or over-the-ear hearing protection, The Centers for Disease Control and Prevention (CDC), Sportsmens Heritage and Recreational Enhancement, Larson Davis Model LxT1-QPR Sound Level Meter, 22LR Federal American Eagle Rimfire Suppressor 45gr. So gunshots at ~150 dB means that a 78 dB is around a ~70 dB reduction. Couple this steep cost with the $200 nonrefundable tax and you can see why some people would like to deregulate these devices. And its 6.5" long including the booster. Hunters typically dont wear ear protection when traveling out in the field, either. We observed a change of only 1-4dB between the two barrel lengths, both suppressed and unsuppressed. This kind of gear is extremely expensive and only made in a few precision labs around the world. Of course, the exact amount will vary depending on the type of gun, type of ammo, barrel length, shooting conditions, etc. This includes .22 Hornet, .17HMR, and even 5.728. He is a graduate of the University of North Carolina-Chapel Hill and holds a Masters in Business Administration (MBA) from Duke University. We tested three of the most popular pistol calibers, 9mm, 45 ACP, and .22lr, with varying barrel lengths. Leading to better accuracy as the shooter is not tensed up expecting recoil. We can generalize around popular types of ammo, out of common barrel lengths to show how loud a gun is normally.. Even if youre not an avid shooter or gun owner, its easy to understand one simple fact; exploding gunpowder is really loud. Since size and weight are big concerns on most SBRs, youll appreciate that the BANISH 223 is made of lightweight titanium weighing just 9 ounces and is only 7 in length. This phenomena is commonly known as First Round Pop or FRP. We Tested 27 Rifle Suppressors: Heres What We Found. Even though a .30 Cal silencer will suppress a gun shot from a smaller caliber, the sound isnt as suppressed as it would if the shooter were using a model made exclusively for the round being fired. This field is for validation purposes and should be left unchanged. The BANISH 22 suppressor is designed for use with rimfire pistols and rifles chambered in .22 caliber and smaller. The result comes out as exiting exhaust within an acceptable audio range. All Rights Reserved. Sound is measured in decibels, or dB. The hesitation of hunting with silencers in these states allegedly comes from trying to stop poachers from quietly killing game animals back in the mid 1900s. Federal American Eagle Suppressor 45gr. const join_popup = document.querySelector("#gform_submit_button_12"); Rounding out the best 22 suppressors are the Rugged Oculus and Q El Camino, and . Most of the time, the sound is still very obviously identifiable as a gun shot. The more we all know, the better organized and stronger the shooting and hunting community will be. Not all suppressors are created equal. By using a silencer or suppressor, you can also greatly reduce, or in many cases eliminate the bright muzzle flash caused by the burning gases exiting the barrel. Designed for smaller, center-fire calibers, the Banish 223 will fit all rifles .224 and smaller. This is a bit of an overstatement - of course, you'll know there's a 5-inch tube protruding from the muzzle of your gun. So why not just wear ear protection all the time? Anything higher than that and you risk hearing damage. Retaining the #1 position from 2021, the Dead Air Mask once again claims the top spot., SilencerCo garners two positions with their Sparrow 22 and Switchback 22. We are happy to work directly with you to match your needs to the right suppressor. "http:":"https:";if(/^\/{2}/.test(i)&&(i=d+i),window[n]&&window[n].initialized)window[n].process&&window[n].process();else if(!e.getElementById(s)){var r=e.createElement("script");r.async=1,r.id=s,r.src=i,o.parentNode.insertBefore(r,o)}}(document,0,"infogram-async","https://e.infogram.com/js/dist/embed-loader-min.js"); While it might seem desirable to test under extremely controlled conditions, this doesnt allow for an understanding of how suppressors perform outside the lab. Made from Grade 5 titanium and 17-4 stainless steel, the HUXWRX HX-QD 556 Ti is a lightweight 5.56 rifle suppressor, at just 13.1 oz and 6.67". Most SBRs are built on the AR platform since the AR15 has quickly become one of the most popular rifles on the market. There are many factors that go into how a suppressed gunshot will sound. Suppressors dont create the Hollywood whisper quiet puff of gunfire. The story is different with the Walther P22. for the Forest Products, Paper, Packaging and other Manufacturing Industries Along with the sound of the action, there is an additional insuppressible noise that comes into play, but it has to do with the actual projectile itself. We wanted to approach our project as scientifically and accurately as possible, without first having to get a degree in acoustics. Get started today! Period. Maddoxs NFA expertise makes him a popular voice for the industry, and he speaks regularly at National Compliance Conferences. }); document.getElementById( "ak_js_2" ).setAttribute( "value", ( new Date() ).getTime() ); Please enable JavaScript in your browser. This project is a massive look at silencers with testing data that shows exactly what difference a suppressed firearm can make on your sound levels while shooting. Take advantage of our suppressor concierge service by connecting with one of our suppressor experts. Having said that, let's go on to the important data! Whatever the reason may be, educating yourself and others will help everyone better understand how these devices, and their potential role as everyday tools, can have an influence on our hearing health, personal defense, and recreational uses. The BANISH 30 is the only one that comes apart to clean and tested even quieter when switching out front end caps (results not shown in this study). Despite the extensive regulations and high prices, according to the 2018 ATF Statistical Update, American citizens currently own 1,489,791 silencers. This is caused by the burning off of oxygen that has filled the silencer baffles and chambers when the action is left open or the device has not been in recent use. Only two of the 42 states have banned hunting with a suppressor, CT and VT. Because gun and suppressor laws can quickly change, we suggest you consult your state representatives to ensure hunting is legal in your state. It isnt easy to get 27 different rifle suppressors together for a test session. As you can see, depending on the type of suppressor chosen, you get anywhere from around 23 to 36 dB sound reduction. The Sandman series comes in two flavors. The most versatile suppressor in the Banish line, the Banish 30 works with all of your rifle calibers from .17 to .30 caliber magnums. The arguments in favor of bans and confiscations range from how silencers make a firearm more deadly all the way to only murderers use them. Well handle the entire buying process for you from the comfort of your own home, and well even mail your silencer right to your door once its been approved! By conducting our tests outside, we got a more accurate feel for what shooters experience when they are using their rifles and silencers. The Latest Insights and Suppressor News - Silencer Shop, Illinois Suppressor Bill: Silencer Shop and ASA Fight Back, Short Barrel Rifles: How to Buy & SBR Laws, 13729 Research Blvd Suite 630 Austin, TX 78750. With this in mind, we set out to do our own independent sound level testing. Rapid Fire Length: 8.4" Weight: 18.3 oz Diameter: 1.735" Build Materials: Stainless Steel, Titanium Finish: Cerakote Barrel Rating: None Rating: .300 BLK, 5.56mm, 7.62mm, .300 WM Attachment/Thread Pitch: 5/8x24 Direct Thread included We chose two different barrel lengths as one of our test variables, one shorter and one longer. Similar to the whole Magazine vs. I chose a 762 can because I only want. There has also been an increase in education and awareness of hearing loss caused by firearms. . In fact, WebMD claims hearing loss is the third most common health problem in the United States. Moreover, the legislative history of silencer statutes indicates that these provisions were adopted with little or no debate. Who Can Use Suppressors, A Look at the Best AR-15 Suppressors in 2023, A List of the Top Suppressor Manufacturers in 2022, Confirm product compatibility with your firearm, Let us guide you through the Form 4 process, Explain new ATF eForms for Lightning Fast Approvals. Made of lightweight titanium and aluminum and able to change between two sizes means that this suppressor can be an incredibly compact can, while sacrificing very, very little. To go that route, youll need a .30 caliber suppressor like the BANISH 30. Their Raptor (rifle suppressor) is where my interest lies for this article. In many areas, dangerous predators have learned to associate the sound of gunfire with a dead animal and come looking for easy meat. const join_popup = document.querySelector("#gform_submit_button_12"); The suppressor contains and slows down the gas that leaves the barrel, which makes for a quieter report. The bright flash emitted from a gun blast can cause temporary blindness and disorientation of the shooter or others in close vicinity. Looking directly to price as a way to gauge performance is not the best course of action. The lowest average suppressed measurement of 119.34 dB came from firing 22LR Federal American Eagle Rimfire Suppressor 45gr. We went ahead and got a bunch of leading .30 caliber rifle suppressors together and asked one simple question. This reduces stress on wildlife, and on non-hunters who may be in the area. The HX-QD 556 Ti features patented OSS Flow-Through technology to reduce back pressure and toxic gas blowback into your face. That is, they want the best sound suppression and decibel reduction that their hard-earned money can buy. There werent any measurable differences in the audio levels when unsuppressed, but we did see a 2 dB different when using a silencer. So, readers, controversy aside, thoughts? Lightweight titanium was also desirable by all users. Suppressor comparison chart. Generally, the shorter the firearm barrel, the louder the blast will be. Noise reduction of all ear-level protectors is unable to reduce the impulse pressure below 140 dB for certain common firearms, an international standard for prevention of sensorineural hearing loss . Suppressors that mount onto a proprietary flash hider or muzzle brake may be desirable to some for ease of use, but can also hurt accuracy and drive up cost. By the way, the suppressor comes with a flat sight plane that allows you to acquire and shoot your targets with ease. We'll start out with the Remington 10/22 data - even though the Walther P22 results were a little more interesting. FMJ. Are you one of the 1.4 Million+ civilians that actually owns a silencer? Research that demonstrates the superiority of silencers over traditional ear protection has been published by Matthew P. Branch, MD. Even though suppressed gunfire is still audible over great distances, popular hunting areas are made less noisy through the use of suppressors. Read More. As an added perk, its even rated for limited full-auto fire. This brings us to gunshots. Overall, we recorded an average of 119-129dB when firing all ammunition suppressed. For our testing purposes, we used a *Larson Davis Model LxT1-QPR Sound Level Meter. But how well does it work? Different ammo, guns, bullet weights and other factors may bring these almost-there suppressors to below 140 dB. It should go without saying that people buy suppressors because they want to reduce the decibel level of a gunshot. Clark also wrote, The data indicates that use of silenced firearms in crime is a rare occurrence, and is a minor problem. Plus, the BANISH 30 can be configured in different lengths based on shooter needs. In reference to firearms, a Ruger 10/22 rimfire rifle with no silencer (suppressor) installed registers at 140 db. Of those 12, seven failed to achieve the same 140 dB or lower threshold for .223. The difference is in the lengths, the "S" which is 6.8 inches long (top of the article"in the white") and the the "L" which adds two more inches (above in the usual black). To fight back against such ridiculous and unsubstantiated claims in recent years, legislation and research have been introduced to try and deregulate the sale of silencers all together. Interestingly the decibel level of an unsuppressed gun is 165dB, which is higher than that of a jet engine by 15 dB. Silencer Central is revolutionizing the suppressor-buying market, . Thanks for your support, and as always, happy shooting! !function(e,t,s,i){var n="InfogramEmbeds",o=e.getElementsByTagName("script")[0],d=/^http:/.test(e.location)? However, for practical purposes a string of measurements is sufficient. Thats an average reduction of 34 dB when using a silencer with a 9mm firearm. Luckily, the BANISH 30 performs great with the .223/5.56 round as well.