Suppressors and the 300 BLK are tight, but not inseparable. The 300BLK will sound like almost Hollywood quiet vs the 5.56 which will still sound loud (just not hurt your ears loud). At the ear, the Half Nelson is almost 15 Suppression Rating points higher, denoting a drastic difference in signature. Objects travelling near or above the speed of sound create a shockwave of compressed air in front of them. There is no hard and fast rule for determining the sound of a gun when fired indoors. It was helpful and your opinions on this caliber are much appreciated. The Resonator K is designed and manufactured by YHM. .300 BLK is less noisy, because all the powder burns in a 9" barrel, whereas a 5.56mm needs a 14.5" or even longer barrel for that. One notable difference between the early-time signature of the Resonator K and those two silencers with subsonic 300 BLK is the significantly higher amplitude of the end-cap exit event with the Resonator K. Overall subsonic 300 BLK performance comparisons of the two silencers are shown in Section 6.30.2 of this review. Even if I miss an enemy attackers vitals, a .30-cal wound is likely to bleed out, while .22-cal skin holes are not as likely. Throughout the years Ive found what suits me a and will be up to the task of the job at hand. In the real world, maybe. 7.6251 is truly a do it all cartridge, 7.6235 provides .308 performance in a more friendly package for closer distances with lots of bullet choices, 7.6239 is a fun, inexpensive to shoot, intermediate power legacy rifle caliber, and 5.5645 is, well I still dont personally have any use for a .22 Hyper Magnum cartridge. Amazing how loud that little bullet is. Thats it # science. 8 a.m. - 6:30 p.m. | Fri. 8 a.m. - 5 p.m. | Sat. However, its important to note that the 142 db was recorded by a sound meter placed just one yard away from the path of each bullet. Minimum Velocity: 1041 fps / 709.8 mph 5.56 is worse. Looking at the self-defense angle for Jeff, we are again looking at a matter of perspective. It doesn't make sense, but it is what it is and I've been told that is the way it is for a lot of people with hearing damage. Probably a little louder than a . An AK serves the .308 Short role well, but having a modern, American-designed, more ballistically efficient cartridge with many more useful options to choose from was preferable to me. Update New, How To Cancel Call Barring On Mtn? What about flash? The supersonic aspect is another: the "crack" of the bullet's shockwave is very high-pitched and is probably the most damaging part of weapon reports. So quiter but not noticeably so? This can actually vary a fair bit depending on altitude, temperature, and humidity, but in general, 1100fps is the determining number used in the firearms industry to differentiate the two. Subsonic bullets generally boast a lighter recoil than their speedy relatives, and have an added weight coming to around 180-220 grains in a standard . It has a 1.56-inch diameter and is 4.8 inches in length without a mount. Post The roof overhead reflects a lot of the sound back to the shooter. Maximum Peak db: 149 db, CCI Mini-Mag 22LR Supersonic (5 Shots)Average Velocity: 1226 fps / 836 mph Comparing Subsonic vs. Supersonic Ammunition - Silencer Central It is my favorite cartridge within the scope of what it was created for. Silencer Review: Dead Air Nomad-Ti Suppressor He is a graduate of the University of North Carolina-Chapel Hill and holds a Masters in Business Administration (MBA) from Duke University. 300 WM, for example, will fit through any of the suppressors but they are not all designed to handle that kind of pressure. As a comparison, 142 db is about the same level as a firecracker going off, and that level of noise can harm your hearing. Want more oomph? For instance, the relatively low-powered .22 rimfire is pretty easy to take down to hearing safe levels (and it gets quieter if you use weaker and slower subsonic ammo). Both are bad with a brake. Take a quick look at our handy suppressed gun decibel chart. 300blk subsonic is an amazingly fun round to shoot suppressed and its the only way to shoot it reliably, but, If you want to shoot with the quietest rifle on the range, the, As an example of how loud a gunshot can be, a . 22 caliber rifle with standard velocity ammo creates, Live tests by independent reviewers of numerous commercially available suppressors find that even low-power, unsuppressed .22 LR handguns produce gunshots, 1000 Centimeters Equals How Many Meters? And a sound that is 100,000 times as intense is 50dB above the . Thats loud enough to cause permanent hearing damage and physical pain. Not quite sure what your point is, Well gentlemen 300 ss suppressed with 10.5 doesnt do shit for the noise but if you gots your 3rd holy of holys and your Shure give you a hole lot more control helps balance the little guy especially when you do something stupid and drop a drum mag in it but hey it just for fun my go to rifel is my 308 savage had her since I was a teenager so dont get me wrong gents m4 not my favorite weapon built this one for my son Ive built a few but my 308 and s&w 40 thats had a few mods them my go twos. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Brandon Maddox, CEO and owner of Silencer Central, is recognized as a national thought leader on Class 3 firearms. Please check your email for status updates. References This page was last edited on . by ProdigalSun Sat Feb 11, 2017 3:11 pm, Post If you look at our gun silencer decibel chart, you see that every time you use a silencer, you reduce the actual sound to hearing safe levels. I bought my first 300 Blackout over a decade ago before it was even a SAAMII approved cartridge and when AAC was essentially just introducing it. adapter and a muzzle brake or flash hider mount. Yes, no, maybe if you shoot off a bench and eat green eggs and ham. Shooting a gun inside can concentrate the sound and cause a greater impact on the shooter. What is the difference between a suppressor and a silencer? Live tests by independent reviewers of numerous commercially available suppressors find that even low-power, unsuppressed .22 LR handguns produce gunshots over 160 decibels. 12-24-11, 16:00 #4 Eurodriver Senior Member Fire a more powerful cartridge, and take the hit in noise and recoil as well. I realize the OP specifically asked for 300BLK subs VS 5.56 (no specification), but to compare subs to supers is apples and oranges. Wearing plugs and muffs the short answer is yes but you want to be at 85 decebels at the ear not 95. Subsonic ammunition - Wikipedia I have severe tinnitus also along with hearing damage. by Mnags Wed Feb 08, 2017 4:36 pm, Post As my hearing damage has gotten worse, I've noticed that I have a harder time hearing PEOPLE, but regular outside noises are LOUDER. Significantly less? muzzle brake achieved a Suppression Rating of 40.9 in PEW Science testing. Wolf Match 40 grain 22LR subsonic. In those conditions, the speed of sound turns out to be 1118.2 fps, or 762 mph. Suppressor users love shooting subsonic ammo primarily because it lacks the loud crack of supersonic loads. I shoot subs and supers and I don't notice a difference at the ear. The next peak of 119.3 dB occurs during combustion within the weapon system. However, it is also important to note that the subsonic 300 BLK cartridge is intended to excel at highly reduced sound signature. The former makes heavy use of the cartridge for its subsonic capabilities and the latter for its real and functional use as an outdoorsmans AR round. It is also great supersonic for hunting. Depending on the ammo you buy, you can get low-flash powders. It has a 1.5-inch diameter and is 7.9 inches in length. PEW Science encourages the reader to consider the Suppression Rating when deciding on an appropriate silencer and host weapon combination for their desired use. Minimum Peak db: 158.1 db In 2002, Small Arms Review tested the Welrod (in . Bottom line, the .300 BO was designed to burn its powder in a shorter barrel while 5.56 was designed around a 20 barrel. So Jeff, I dont think youll be at a detriment going with a 10.5 300 BLK. Images related to the topicSub Sonic Ammo out of an Unsuppressed 300 Blackout. If you had two identical uppers with 10.5" barrels shooting supersonic with one barreled in 300blk and the other in 5.56, would the 300 blk be more tame with less concussion and blast? You have just come across an article on the topic how loud is a 300 blackout without suppressor. Maximum Peak db: 165.3 db, Sellier & Bellot 300BLK Subsonic (5 shots), Average Velocity: 898 fps / 612.3 mph 300 Blackout: Shooting with Subsonic Ammo - Silencer Central Some examples include .300 Whisper / 300 AAC Blackout (7.6235mm), .338 Whisper, 939mm, . All Rights Reserved. The silencer weighs 9.5 ounces with no mount, as tested. Factory-made ammunition conforms to standards laid out by SAAMI, the Sporting Arms and Ammunition Manufacturers Institute, which standardizes the specifications for any given type of ammo. Not necessarily. While the sound signature of such cartridges can be suppressed to levels that may result in the desire of the shooter and bystanders to not wear hearing protection, PEW Science encourages the reader to remain vigilant with regard to all subsonic rifle cartridge suppression claims. Would a heavy barrel be an advatage over a pencil barrel, or a carbon fiber one? Its insanely popular with hog hunters across the country and most of these guys treat the rifle and supersonic loads as a sort of medium range ranch rifle. The dB scale by which all sound is measured is logarithmic, and is referenced to the lower threshold of human hearing. I wear hearing aids when I need to hear. 300 BLK loads tend to burn ALL of their powder in 8-10" of barrel while 5.56 loads are optimized for longer barrels and will have a LOT of flash and blast out of a short barrel, so there's one component to consider. The included YHM Phantom Q.D. See more related questions in the comments below. SILENCER SATURDAY #37: Subsonic 300BLK Shootout if(join_popup){ Megan, Maddoxs wife, is a 5th generation South Dakotan, and together they have two daughters. As the pressure pulse exits the silencer, an initial peak of 145.6 dB is measured. But I still wouldn't want to touch one off in a hallway without a suppressor. Suppressors - Subsonic 300 Blackout Suppressor Short Can Short List | Sniper's Hide Forum Thunder Beast Dominus, Dominus-K and 338SR on 8" 300 BO Bolt Gun Sound Test Share Watch on The Sniper's Hide App is here! $809.99. 300 BK is perfect for all of those TactiCoolFools who cant handle the recoil from the 300 Winchester Magnum that is favored by so many Fudds. Testing Subsonic Ammo We'll be shooting and comparing five rounds each of the following ammo: Prvi Partizan 125 grain 300BLK FMJ supersonic One Tara Blvd., Ste 200 .308 vs 6.5cm, which one is quieter? : r/longrange The Discreet Ballistics 300 Blackout 190gr Subsonic Target Load is intended for use in semi-automatic and bolt action firearms chambered in 300 AAC Blackout. Note that the performance of the YHM Resonator K at the weapon muzzle, which is an indicator of nearby bystander sound signature perception, is lower than that of both the Energetic Armament VOX S and Q Half Nelson. The user should note that it is a compact silencer and therefore its sound signature suppression performance is lower than that of larger silencers in both the subsonic and supersonic flow regimes. Probably the most prolific in recent years is the .300 blackout, designed specifically to accommodate both subsonic and supersonic loads in the same rifle with minimal adjustments. First, a brief excursion into basic physics. Minimum Velocity: 1912 fps / 1303 mph