silencers for supersonic rounds

Discussion in 'Technical Questions & Information' started by runes, Sep 15, 2012.

  1. runes

    runes Member

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    How well can a silencer function for supersonic 30.06 or .308 round?
    Seems like it just couldn't really.
    I have seen cans on a subsonic .22 eliminate 99% of the noise but a regular .22 long rifle round sounds like there was no silencer at all.
  2. old semperfi

    old semperfi New Member

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    i live in southern indiana,old country boy at hear
    depends on the silencer,length and weight has much to do with it.however a subsonic round will be much quieter.old semperfi
  3. Maine04657

    Maine04657 New Member

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    First they are suppressors. As for what they can do depends on the make and model you get and what kind of firearm you attach it to. A bolt gun will be quieter then a semi will. I can shoot factory .308 and it is not as loud as a unsuppressed 22lr. 22lr's are great to suppress as you get rid of the bang but as with all things if the round is going faster then the speed of sound your going to get a sonic crack. Call a local place that sells them and ask where you could see them shot and go see for yourself.
  4. CampingJosh

    CampingJosh Well-Known Member

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    Last edited: Sep 15, 2012
  5. Alpo

    Alpo Well-Known Member

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    You tell him, Josh. :D

    [​IMG]
  6. Jim K

    Jim K New Member

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    A silencer (or suppressor if you want) reduces or eliminates the noise of the gas escaping from the muzzle of the gun after the bullet leaves the muzzle. It does not and cannot suppress the "sonic boom" caused by a supersonic bullet as it moves down range. But in many cases, that noise is lost in the ambient noise and in any case will originate with the bullet wherever it is, rather than with the gun, so the gun will be harder to locate.

    As to effectiveness, most suppressors today don't really "silence" the report of the firearm they merely cause it to NOT sound like a gun. But reports from the old days indicate that the Maxim was a effective, though a very expensive, silencer. One person (my father) who witnessed the firing of a Model 1903 rifle with a Maxim Silencer indoors stated that the only sound heard was the click of the firing pin. (I assume, but don't know, that a subsonic cartridge was used. In any case, the shot was fired through a window into a wooded area which absorbed any sonic noise from the bullet.)

    Jim
  7. aa1911

    aa1911 Active Member

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    Jim K hit it spot on, IMO

    The biggest thing a suppressor does (heh heh) is make identifying the position of the shooter harder; you cannot silence a supersonic round and even subsonic rounds often have a significant report. You're gonna know a gun was fired but it helps hide the location of the shooter and muffle the sound.

    most cases, when someone is fired upon with a suppressed weapon, the perceived direction of the shooter will usually be off 90 degrees, or so I've been told. I try to be on the giving end so couldn't tell you matter of fact on that one!
  8. Maine04657

    Maine04657 New Member

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    You are correct that is what he called them. However it is still incorrect as they do NOT silence the firearm they suppress the noise signature. Also most modern manufactures do not call them silencers. so while using the word with a Maxium would be correct it would not be with the majority of current manufacturers. This is the reason both words are acceptable to the ATF on a official forms unlike how strict they are with all others words.

    Having been stamp collector for over 25 years I know what is what. I have built many suppressors myself. Allot of what is on the internet and chatted about at ranges and shops is false. A quality well made suppressor for many calibers can eliminate almost all noise except for the sonic boom ( as of yet the only way to get rid of the boom is to use subs ). I have suppressors in most every caliber and the difference in Many is astounding. The 5.56 for example does not suppress well the best 5.56 suppressors out there are surprising loud with factory ammo out of a ar. However round like the .308 do very well out of a bolt gun. The .45 also suppresses extremely well as most factory 45 acp ammo is subsonic.

    Over the past 10 years suppressors have become much more mainstream. thus more misinformation. Way back when I first got started I would not take one to the range due to the bs I would get form people who thought I was breaking the law. These days depending on the range you are likely to see a few folks with them. Other NFA toys are also more likely to be seen.

    For all those who do not own any or have not personally shot any I urge you to find a local place or local folks who do and chat em up and get them to let you try them out most NFA folks like gun folks in general are friendly and love to pass there hobby ( addiction ) to others. Until you try a variety of suppressors out yourself you will not understand what exactly they can do. the movies are total BS and most places like utube do not give you the same experience as being there.

    Anybody in northern Maine wants to try suppressors or MG's fell free to let me know. I have many many acres of land to shoot on here and love to have folks over to play. Also have two very trusted dealers who I can recommend to buy from if you like them ( most who try them want one) ..
  9. CampingJosh

    CampingJosh Well-Known Member

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    ATF uses the word, and the inventor used the word, but somehow it's wrong because it doesn't perfectly describe the mechanical function? We're just going to have to disagree here.

    I'm not going fishing, I'm going catching...

    Besides, this is the company that made mine. Seems like they're OK with the name silencer.
    Huntertown Arms Logo.png
  10. JLA

    JLA Well-Known Member

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    The reason they dont seem to 'work' on super sonic ammunition is because you are hearing the sonic crack of the bullet breaking the sound barrier. They are muffling the report of the escaping gasses from the muzzle, but nothing can stop the sonic crack of a projectile traveling faster than 1080 fps.

    Thats why you have seen subsonic .22 rimfires work and high velocity .22LR not work so well.

    Heres a neet test.. If you have a silenced .22 pistol you can run CCI minimags thru it, which is ammo rated at 1260 fps, yet from the pistol barrel it will only be running about 950-1000 fps depending on barrel length and will be completely muffled by the can. But take a supressed rifle and the same ammo and you will get the crack.

    There I used the words, silenced, supressed, muffled, and canned.. :D
  11. rhmc24

    rhmc24 Member

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    Memory lane again. In prehistoric times when I was about 15, 1930s, I made a "silencer". Got the idea from a car muffler. We had aluminum tax tokens of 1/10 cent that had a hole in them, I used a stack of about 12 of them, separated about 3/16", all in a brass tube that had been part of an air pump, LOA about 5". On a .22 rifle, all the sound it made was a kind of 'chuff' sound and the click of the hammer -- with a .22 short.

    We didn't understand why with a .22 long rifle round it made a lot of noise. Didn't matter much because we almost never got .22LRs. They cost a quarter a box while shorts were 15 cents.
  12. JLA

    JLA Well-Known Member

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    Velocity.
  13. Alpo

    Alpo Well-Known Member

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    Prehistoric times. Yeah. When shorts actually cost lest than long rifles.

    Before I was born.
  14. JLA

    JLA Well-Known Member

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    I was gonna mention that earlier alpo.. Damn shorts run about twice what LRs run nowadays.. Sucks too. I likes shootn shorts.
  15. Alpo

    Alpo Well-Known Member

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    I got 1300 rounds of shorts, and only one gun for 'em - an 1890 gallery gun.

    At one time in my life, I would have thought that was a lot of ammo.

    Amazing how things change as you get older.
  16. runes

    runes Member

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    Thanks guys
    You answered my question.
    Rhm , I remember the 1/10m coins in my youth ( long time ago ) but they were plastic and no holes.
  17. Maine04657

    Maine04657 New Member

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    I have suppressors that can be used on as I said a factory .308 with very little noise at the shooters ear. You will still have the sonic crack but that will be hard out from the shooters position. They are very effective on supersonic ammo as stated it also depends on the firearm used.

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