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Subsonic 5.56 ammo

Discussion in 'NFA Firearms and Accessories' started by Charles S, May 14, 2012.

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  1. Charles S

    Charles S Member

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    I just heard from my local gun shop that my new Smith Enterprise Wind Talker 5.56 sound suppressor arrived today.

    http://www.smithenterprise.com/products11.html

    Now I get to fill out my paperwork and wait on my tax stamp. This does however bring up a question. Where can I get subsonic 5.56 ammo.

    The can will be mounted on a 16 inch barrel Bushmaster. A quick internet search reveals a variety of subsonic 5.56 ammo. Can anyone recommend a specific manufacturer and if so what source did you use to purchase it?

    I appreciate your assistance.
     
  2. GRAPE-DRANK

    GRAPE-DRANK Member

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  3. Charles S

    Charles S Member

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    I have done the internet searches and have found all of the above websites. Do you have any experience with the loads?

    I have searched the Internet & found as much as I can. I was hoping to find someone's personal experience.
     
  4. wally

    wally Member

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    A sub-sonic 5.56 gets you into "mouse gun" .25ACP/.32ACP.380ACP territory, so I'd have to ask why? What can it do a suppressed .22lr can't?

    At least with .300 Blackout and 220gr sub-sonic you can get .45ACP like energy levels and significantly better ballistic coefficient for longer effective range.
     
  5. Charles S

    Charles S Member

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    Agreed, but I am not looking for energy. The primary purpose of this can is to shoot full power 5.56 ammo. However I would like one or two twenty round magazines loaded with subsonic ammo for punching paper, ringing plates, or taking care of small varmints.

    I already have a 22 can set up for use on several host, but like the idea of redundancy. Thus, I am intersted in a quantity of good subsonic 5.56 ammo.
     
  6. jmorris

    jmorris Member

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    The only argument I have seen is a jacketed .223 bullet won't lead up the can like a .22 but I agree a single shot AR with the power of a .22of and the cost of 223 seems kinda silly. I would suggest trying each SS load out to make sure the bullet is stable before mounting the can.
     
  7. Captains1911

    Captains1911 Member

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    This. Sub-sonic 5.56 makes no sense
     
  8. Nikdfish

    Nikdfish Member

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    With a sub-sonic .223 you get pretty much the exact same thing as firing the 60 grain .22 Aquila SS round with a .22 LR conversion. (except no BCG change & no autoload ...)

    Nick
     
  9. Ranb

    Ranb Member

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    Not even close. What are people getting for speeds with the Aguila subsonic 60 gain ammo anyway? The best I could do was a bit over 700 fps in various pistols and rifles.

    Let's say we have a 22lr 40 grain moving 1050 fps and a 60 grain moving 750 fps (can anyone do any better?). This gives us 98 ft-lbs and 75 ft-lbs. Compare this to a 70 grain Speer RN at 1050 fps; about 171 ft-lbs. Almost 75% greater energy. Use a heavier bullet and you get even more power. Another factor is that due to the much greater powder charge in the subsonic 223 (about 7 grains) compared to the 22lr (about 2 grains?) the subsonic 223 is going to be much noisier than any subsonic 22lr especially when suppressed.

    Using a 300 whisper or 300 Blackout upper is much nicer. You get true semi-auto capability and much more power from the 240 grain bullet or supersonic 125 grain bullet. I never got any better than double the group size with subsonic 223 compared to standard ammo in my ar-15. If you want quiet, go with 22lr, if you want power and accuracy go with 300 Blackout. I have loaded subsonic 223 in the past and found it was boring, so I don't do it anymore.

    I think buying specialty ammo is for suckers. Buying a single stage press will save you money in the long run, the short run if you are buying subsonic 223. :) Loading your own means you do not have to put up with subsonic ammo that actually goes transonic/supersonic and is noisy, or ammo loaded so weak as to guarantee subsonic velocity but only runs 800-900 fps with a trajectory that rivals a mortar.

    Ranb
     
    Last edited: May 16, 2012
  10. Charles S

    Charles S Member

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    Ranb,

    Thanks, that is the information I was looking for.
     
  11. rodensouth

    rodensouth Member

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    Good post Ranb, saved this sucker some money!
     
  12. Ranb

    Ranb Member

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    Just to be clear, I am comparing my subsonic 223 handloads to my supersonic 223 handloads. I have never shot any commercially manufactured 223 subsonic. I have no opinion at all on the commercial subsonic 223 other than that it is not tailored specifically for my rifle and is more money then I am willing to pay. But then I only shoot reloaded ammo other than 22lr and 7.62x39.

    Ranb
     
    Last edited: May 17, 2012
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