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5.56 short barrels

Discussion in 'NFA Weapon Discussion' started by SheepDog223, May 1, 2009.

  1. SheepDog223

    SheepDog223 Salem Well-Known Member

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    Does anyone here have an idea about the fps produced by a (7" 1in9 barrel) V.S. a (10.5" 1in7 barrel) V.S. a (16" 1in9 barrel)
     
  2. aquariumjunky

    aquariumjunky Albany, Oregon Active Member

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    Next range trip I will run some through my 14.5 barrel and post back! And please post the ammunition shot also for good quality comparison.

    Steven
     
  3. SheepDog223

    SheepDog223 Salem Well-Known Member

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    I mainly shoot .223 wolf 55 grain and 5.56 green tip 55 grain.
     
  4. aquariumjunky

    aquariumjunky Albany, Oregon Active Member

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    If you happen to be a member at ARPC they now have a crono out and set up I believe semi-permanet on the rifle range for member use.

    Steven
     
  5. SheepDog223

    SheepDog223 Salem Well-Known Member

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    I would like to know before I buy one or the other. I'm trying to get the one that I'll be content with.
     
  6. Wallygator

    Wallygator Albany, OR Active Member

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    You can usually figure that for every inch you lose in length, you will lose about 50 ft/sec.
     
  7. SheepDog223

    SheepDog223 Salem Well-Known Member

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    So with a 7" barrel I'd be getting down into the 2500fps range. How effective is that round going to be?
     
    Last edited: May 2, 2009
  8. RallySoob

    RallySoob Salem, OR Active Member

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    Nothing in .223/5.56 will fragment with a 7.5" but they are probably fun to shoot. Pretty sure 7" puts you around 2100-2150fps though

    11.75 can frag out to 100-120yds

    10.5 frag 50-70yds