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Lehigh Defense's 300 BLK 170gr Controlled Fracturing Subsonic

Discussion in 'Caliber Corner' started by Raleigh Glocker, Jan 8, 2013.

  1. Raleigh Glocker

    Raleigh Glocker

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    The 170gr CF bullet from Lehigh Defense has a very interesting feature. It is a machined brass bullet with a .17 caliber bullet pressed into its hollowpoint. I couldn't wait to test these.

    This factory loaded round came up a little short on velocity from my Handi Rifle (798.5fps avg), but Lehigh wanted me to test it anyway. I think this would make a good coyote round as is, but it would be interesting to see what this would do if pushed 200fps faster. They would also do a number on a deer's neck, if that is a shot you're comfortable taking.

    Note that machined brass bullets are especially sensitive to variations in bore diameter because they don't extrude the same as copper or lead. So, what I saw for accuracy or velocity is more likely to be different for other barrels than conventional bullets.

    [ame="http://www.youtube.com/watch?v=FGP0vUtaiAg"]http://www.youtube.com/watch?v=FGP0vUtaiAg[/ame]
     
  2. chemcmndr

    chemcmndr

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    I think I remember watching this video over on AR-15 forums. IIRC, there were some potential feeding issues in the AR platforms because of the bullet design. Although I love the idea of the expanding round for a subsonic .300 BLK, the fact that there could be issues feeding in a semi just kills it for me.
     

  3. RWBlue

    RWBlue Mr. CISSP, CISA CLM

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    How bad of feeding issues?

    Would it work for the first shot?
     
  4. chemcmndr

    chemcmndr

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    I can't remember if it was brought up in the video, or in the posts over on ARFcom, but it seemed like the bullets were either too long to fit in the AR magazine or the flat front of the bullet could potentially hang up on stripping from the magazine.
     
  5. dkf

    dkf

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    Neat round with a lot of thought put into. But it looks like a mouse fart load. Very low speed and energy. Bet it is over $2 per round also.
     
    Last edited: Jan 9, 2013
  6. RWBlue

    RWBlue Mr. CISSP, CISA CLM

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    The round is for subsonic suppressed fire. It should be loaded at around 1000FPS, but ......

    Yes, it is expensive, but if it worked as advertized....
     
  7. SCmasterblaster

    SCmasterblaster G17 carrier since 1989 Millennium Member

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    I'm glad to see that there is a lot of bullet research going on. They haven't killed the sport yet.
     
  8. Raleigh Glocker

    Raleigh Glocker

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    This round did not have any problems feeding. That was the 200gr ME round.

    I let Lehigh Defense know that the velocity was low for me, but they asked me to proceed with the testing anyway. They said that brass bullets are much more sensitive to actual bore than copper and/or lead bullets.

    It still looks like a reloader could get a lot out of this bullet since there's about 30% more energy that can be put on it while remaining subsonic. They do sell just the bullets for those that want them.

    ETA: The most surprising thing for me was that these actually cycled my 8" Noveske-barreled SBR, which won't cycle Remington 220gr without a suppressor. So, I'm definitely not overgassed.
     
    Last edited: Jan 10, 2013
  9. SCmasterblaster

    SCmasterblaster G17 carrier since 1989 Millennium Member

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    I have lost track here. What caliber are we discussing?:cool:
     
  10. RWBlue

    RWBlue Mr. CISSP, CISA CLM

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    Any .308 subsonic round.
     
  11. SCmasterblaster

    SCmasterblaster G17 carrier since 1989 Millennium Member

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    So the .308 Winchester loaded down. Or a .30-30.
     
    Last edited: Jan 10, 2013
  12. RWBlue

    RWBlue Mr. CISSP, CISA CLM

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    Single shot yes.
    Tube mag....maybe.
    Standard barrel probably doesn't have the rate of twist needed to run that bullet suppresses without a baffle strike.

    But then again, do you have your 30-30 setup for a suppressor?
    If you do I would like to see a picture. I always thought the old lever action rifles with maxim suppressors were cool.
     
  13. SCmasterblaster

    SCmasterblaster G17 carrier since 1989 Millennium Member

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    Nope.