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Maximum energy subsonic

Discussion in 'Rifle Country' started by ctdonath, Dec 3, 2006.

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  1. ctdonath

    ctdonath Member

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    Considering that subsonic ammo maxes out around 1000fps, any thoughts on how to efficiently maximize energy with that limit? .50BMG bullets are somewhere around 650 grains, and I don't know of anything practically heavier (larger caliber has legal issues). Thing is, the .50BMG case is way too big. Is there a combination of heavy bullet and small case that optimizes for about 1000fps?
     
  2. Novus Collectus

    Novus Collectus Member

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  3. rangerruck

    rangerruck Member

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    Texas, baby!
    maybe a 45 bushmaster.
     
  4. atblis

    atblis Member

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    Neither here nor there
  5. Car Knocker

    Car Knocker Member

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    Sharps .50-70 or .50-90.
     
  6. atblis

    atblis Member

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    That would work as well.

    I suppose you could use 50BMG bullets in the Sharps?
     
  7. .38 Special

    .38 Special Member

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    .700 Nitro fires a 1000 grain bullet. Big case and goes more than 2000 FPS, though.

    Cut the case in half, I sez.

    That would be the easy part, anyway. The tough part would be figuring out why you'd want such a thing.
     
  8. Mark Whiteman

    Mark Whiteman Member

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    There are some wildcats loading a 200gr+ bullet into the 7.62x39 case, for example. Speed is limited by the small case capacity. There is a book out of cartridge conversions and several on wildcats you should peruse.
     
  9. Colt46

    Colt46 Member

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    Somebody already pointed out the Whisper

    I can only add that it is a whole family of cartridges that are based on small bore centerfire cases that work in short actions. .221 Fireball seems to be a favorite with many conversions. I love the concept of a Whisper cartridge just to fool around with. One day I'll probably get around to it.
    My two favorites would be the .338 and the 6.5 mm flavors.
     
  10. Tony Williams

    Tony Williams Member

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    Take your pick from HERE:

    Two pics from the article:

    [​IMG]

    [​IMG]

    Tony Williams: Military gun and ammunition website and discussion forum
     
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