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Well, the sound of the bolt cycling is around 110 decibels and a few of the newer cans on the market hover between 118-122 decibels shooting quieter, subsonic 300 Blackout. .300 BK versus the 30/30 appears to be the better question. Anyway . adapter and brake, as tested. I have never had a single issue with subsonic reliability from a 9 barrel unsuppressed. Typically, subsonic loads feature heavy bullets-. Hello everyone. Fire a more powerful cartridge, and take the hit in noise and recoil as well. Federal has a 125gr. Suppression Rating Comparisons Of .30 Rifle Silencers Using PEW-SOFT Data 300 BLK Subsonic Test Data. Measuring 7.6" in overall length and rated to provide between -25 and -39 dB of sound reduction (depending on caliber), the SR7 is a medium-sized suppressor with the effectiveness of a larger model. Much appreciated. All of the subsonic ammo in our test averaged around 142 decibels, which is right in-line with testing done by Larson-Davis themselves. Nothing else can do this, because silencers effectively muffle the gas of firing at the muzzle, and slow it down to make the shot quieter. PEW Science, LLC. The meter will be placed one yard beside a target that is 55 yards away from the shooting position, similar to the setup that Larson-Davis recommends for firearms noise testing. The adaptability to different cartridges and gun types makes the cost of the SilencerCo Omega a little easier. Ive only shot a few boxes of S&B 125 and 147 grain .300 BO, but it wasnt nearly as bad as the 5.56 or 7.6239. at the range. 300 blk shines brightest when its suppressed right? Discreet Ballistics gives its customers the option of choosing these loads for use in 16 . Have an 8" and a 10"; no difference. All Rights Reserved. See how every 10 dB increase is a multiple of 10 times over the previous rating? Reply couchrecliner Additional comment actions One Tara Blvd., Ste 200 The Resonator K is versatile in that it may be used on many cartridges and with a variety of third-party mount adapters. And at that rate youre really looking at something clumsy and not even as powerful as some .45 ACP loads out there which, in at in-home distances, would be just as good. Ask The Experts: Subsonic Or Supersonic 300 Blackout Ammo Against I'm looking to build a rifle in 300 blackout with a dedicated suppressor and running only subsonic as I hear this is probably the quietest AR setup. If you plan to keep it handy for home defense, thats a great role for it. The data acquired 1.0 m (39.4 in) left of the muzzle is available for viewing to all. The amount of force projected by any given bullet headed downrange is a function of the bullets velocity and weight. YHM Resonator K Bolt Action 300 BLK Muzzle Sound Pressure Signature, 24-OCT-2020, Fig 2b. Even suppressed, guns still create sound. This will help us determine if each round did in fact travel at supersonic or subsonic speeds. The 150 to 160 decibels from the supersonic ammo, is a big deal. 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. At that point why not just 7.6239 and save 50% on ammo costs? The idea behind the .300 Blackout was to try to fix all these problems while retaining the format. 12-24-11, 16:00 #4 Eurodriver Senior Member by A-Game Wed Feb 08, 2017 5:22 pm, Post Most rifle and handgun bullets move faster than the speed of sound and will always create a loud crack as they break the sound barrier. So my question, could it be possible the wet holster, WD40 blued that part? As it is and ever shall be! Shes a whole lot of talk but when the time for action is at hand, shes nowhere to be found. Blackout is my favorite AR cartridge, fitting nicely between 5.56 and .308. In this review, the Resonator K performance metrics depend upon suppressing a subsonic intermediate rifle cartridge. Unsuppressed 5.56 vs 300blk RE: muzzle blast, concussion, and noise; in A 9" 300BLK is very comfortable to shoot. Given the compact size of the Nomad-Ti and its insanely light weight heck, given any suppressor size or weight it's silly quiet. I never had the desire for an AR or a Mini-14 until they were offered in 300 BLK because Id never had a job that required a .223 tool. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Silencer Guide with Decibel Level Testing - The Lodge at AmmoToGo.com This page contains links to detailed Sound Signature Reviews of each silencer/host combination contained in the repository of Test Results, in accordance with the Silencer Sound Standard. As you can see from the infographic below, a 9mm pistol typically produces around 160 decibels. Lets look at two reasons to use subsonic ammo in your firearm. Gun silencers are safety devices intended to reduce the real noise of shooting and protect the hearing of the shooter and people around the shooter. 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. Figure 6. sound meter to measure the noise of each round as it passes through the target. I have never looked back. Currently Im on a kick of only buying firearms that can take multiple calibers. However, it is also important to note that the subsonic 300 BLK cartridge is intended to excel at highly reduced sound signature. Want to further support PEW Science? However, it is important to note that the difference in signature between the Resonator K and VOX S with subsonic 300 BLK is noticeable, and the Q Half Nelson silencer is significantly quieter than both of them. This is why youll see that most, if not all. Centerfire shooters looking for ultimate quiet will often reach for 300 Blackout subsonic ammunition. In short, subsonic ammo is ideal for situations where you dont want your ammunition to make more noise than the sound of your gun firing. Receive email updates regarding upcoming sales, trade-shows, BANISH Suppressors and industry news.