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Multi-caliber Supressors??

Discussion in 'NFA Weapon Discussion' started by ZeroRing, Feb 17, 2009.

  1. ZeroRing

    ZeroRing 26th District, WA Active Member

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    Just curious if there is such a beast out there?? It would be nice to be able to use (and pay the stupid fees) for a single supressor that I could use on my 9mm, .40 S&W, and .45 ACP pistols. :huh:

    Perhaps there are "small", "medium", and "large" sizes?? Granted, the pistol ones would be different from the "rifle" ones since the velocity of the two are generally quite different.
     
  2. coctailer

    coctailer Portland, OR/Hastings, MI/Vancouver,WA I run with scissors.

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    YHM Cobra M2 .45

    You can get adapters for your .40, 9mm, and fixed barrel.
     
  3. korntera

    korntera Oregon Member

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    There was a group buy on these, but thats over now :-(
     
  4. coctailer

    coctailer Portland, OR/Hastings, MI/Vancouver,WA I run with scissors.

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    I can still get one for ya.
     
  5. stitchclimber

    stitchclimber St. Louis Active Member

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    not to hijack but, I've heard about using a .30 cal suppressor for both .30 and .223, is this possible? or even practical.
     
  6. coctailer

    coctailer Portland, OR/Hastings, MI/Vancouver,WA I run with scissors.

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    Ya, works great from what YHM says.

    They have a Phantom QD 7.62 can that they say is quieter than their .223 can on a .223 rifle.
     
  7. ZeroRing

    ZeroRing 26th District, WA Active Member

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    Good to know... maybe someday I'll get to even USE one here! :paranoid:
     
  8. Keane

    Keane Hillsboro, OR Active Member

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    Any chance to have a suppressor demo one of these days? I've been on the fence for a while, and sort of want one for my 9mm handguns (CZ-75, or KelTek PF-9).

    So the question is, with the 9mm adapter for the .45 M2, will it be equivilent in suppression to a normal 9mm suppressor?
     
  9. MrNatural

    MrNatural Oregon Well-Known Member

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    I have found from experience and hands-on side-by-side testing that the bore diameter of a suppressor makes a LOT less difference in sound suppression than you would be led to believe.

    Translation: A .45 pistol suppressor will work just fine for .40, 9mm and .22 pistols. A .45 smg suppressor will work fine for .40, 9mm and .22 smg's. A .30 caliber rifle suppressor will work fine on a .223.

    This is the Dirty Little Secret of the suppressor industry. The can manufacturers REALLY don't want their customers thinking in these terms.

    The only real limitation is barrel threads. Suppresor manufacturers DELIGHT in threading their cans differnt from everyone else's. The answer is to find a good Class 2 manufacturer machinist to make you some adapters. Its important to find a machinist versed in suppressors because your adapters MUST produce proper alignment or you WILL get a baffle strike.

    I've been using .45 pistol and smg cans with adapters on all centerfire pistol and rimfire calibers for years. No problems. Also .30 rifle suppressors with 7.62x39, .223 and even .22lr (although a .30 can on a Ruger 10/22 is awfully misbalanced).

    Limitations -Just keep in mind that you:

    1. Can't put a suppressor designed for rimfire on a centerfire platform.
    2. Can't put a suppressor designed for a pistol or smg on a rifle caliber platform.
    3. Can't put a suppressor designed for semiauto on a full-auto gun.

    Keep your can to original or lesser pressure specs than designed and you'll be fine. Start with a big hole can. You can always get smaller ones later if you decide its needful.
     
  10. nx302stang

    nx302stang PAC-NW Member

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    so the bigger the bore on a suppressor on a smaller caliber is quieter than a small bore suppressor?
     
  11. MrNatural

    MrNatural Oregon Well-Known Member

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    Thats not what I said. I said a larger caliber in a supressor works fine on smaller calibers at or less than the designed pressure range.

    Two things going when you use a larger caliber suppressor on a smaller caliber.

    1. Usually a larger caliber can has more internal volume.

    2. Smaller calibers produce less gas volume.

    At any rate the hole in the middle doesn't make that much difference in actual use. Gas stripping from the bullet path appears to be accomplished just fine by a bore a few thousandths larger.

    I haven't done any technical testing, although I have the B&K sound meter and mic for it, but I suspect the Db reduction for 9mm thru a .45 can is close to the same as .45 thru a .45 can.

    I've shot smaller calibers in a larger can side-by-side with the same caliber in the correct caliber can. Neither I nor my shooting partner could discern any material difference in the sound level.

    Technically there may be a Db difference but its just not much if any.
     
  12. PhysicsGuy

    PhysicsGuy Corvallis, OR Resident Science Nut

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    Shooting a smaller caliber through a can does lose efficiency, do you the difference in cross section, but it is made up for it by the fact that the can should have a larger volume, which gives the gases more room to expand. From some of tests I've seen, equivalent brand/model line .308 cans can be quieter than .223 cans on the same .223 gun, this is because the .308 can has considerably more volume.
     
  13. hntn&fshn

    hntn&fshn Boring Member

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    Sent you a PM
     
  14. SVT

    SVT N. Seattle Member

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    I use a Gemtech HVT (.308 can) on .308 as well as .223 and it works fine. If you want to shoot various suppressors and are down in Oregon, I'd suggest attending the Albany MG shoot (next one is this may, I believe it's the second weekend) they happen twice a year. You can rent quite a few different machine guns as well as silencers. They also have a quiet shoot, where only suppressed firearms are allowed to shoot.
     
  15. jordanvraptor

    jordanvraptor Oregon City, Oregon Well-Known Member

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    Pillow....:)
     
  16. ronin223

    ronin223 Portland Active Member

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    Another question. Will a 9mm semi auto pistol cycle with a 45 suppressor on it?
     
  17. Keane

    Keane Hillsboro, OR Active Member

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    It really depends on a number of factors, the only way to tell would be to try it. It IS possible that it would cycle it.

    You might have to replace the spring in the 9mm in order to get it to cycle though.
     
  18. Iansstud

    Iansstud SW WA / PDX Member

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    just dont shoot a 45 with a 9mm silencer on it

    :grenade:
     
  19. Grizzly_A

    Grizzly_A Portland Metro Area Member

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    So you're saying that any ol' machinist who's skilled can't make threaded adapters for barrels/guns? Isn't it just a part that needs to be threaded?


    I assume that since putting a suppressor designed for rifle on handgun platform wasn't in the list is allowed? it's also fine to use a centerfire can on rimfire?
     
  20. Keane

    Keane Hillsboro, OR Active Member

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    You have to find a damn good machinist to make the parts, since they have to be spot-on perfect to a few 1000ths of an inch. Otherwise, you can get baffle strikes. "Any ol machinist" won't have the tools to get it this close.

    Putting a rifle can on a handgun, or a centerfire on a rimfire is ok, as long as the diameters are correct.