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Handgun calibers, expanding bullets

Discussion in 'Handguns: General Discussion' started by Philo_Beddoe, Nov 13, 2009.

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  1. Philo_Beddoe

    Philo_Beddoe Member

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    As I have learned more about firearms I have pretty much accepted the Fackler / FBI data that suggest a defensive round should penetrate at least 12 inches but not more then 18 inches of balistics gelatin and be as big as caliber as possible to facilitate blood loss.

    I believe Fackler also recomends at least a .5 or great expansion along with the 12-18 inch penetration requirements.

    What I want to know is that instead of relying on the sometimes unreliable expansion of a hollow point, why doesnt someone design a large bore round 50 caliber or greater that will penetrate between 12-18 inches in FMJ form?

    Why couldnt we have a .70/.65/.60 etc caliber round, moving fairly slowly, with around 450 lbs of ME that will only penetrate 12-18 inches in FMJ form.

    This way you can use just one load for practice and self defense.

    The only down side I could see is a much greater rainbow trajectory which wont matter in a handgun intended for 50 yards or less and possibly less capacity.

    Maybe a .65 caliber "special" like the .44 special except a larger bore
     
  2. General Geoff

    General Geoff Member

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    See: .50 GI

    the reason larger diameter cartridges aren't generally designed is because 1. the NFA as amended by the 1968 GCA defines any non-sporting rifled arm with a bore over 0.5" in diameter as a Destructive Device, and thus subject to strict regulation, tax, and registration, and 2. You would vastly reduce magazine capacity with calibers larger than .50.
     
  3. Philo_Beddoe

    Philo_Beddoe Member

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    I did not know that about the NFA, that 50 GI is close to the idea I am talking about, except I would go up to a .65 caliber.

    Magazine capacity could me somewhat maintained if they keep the cartiage cases short and operating at a fairly high pressure.
     
  4. bigfatdave

    bigfatdave Member

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    You can't make the cartridges skinnier by keeping them short!
     
  5. Philo_Beddoe

    Philo_Beddoe Member

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    true
     
  6. CWL

    CWL Member

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    You move a FMJ too slowly and it will just push-aside tissue rather than destroying it, leaving a hole smaller in diameter than the bullet caliber.

    Besides, asides from Federal disapproval, how big do you think the handgun will need to be if you expect to carry .70 caliber bullets? Bigger is heavier, and if a bullet has too low a muzzlespeed, it may not even be able to cycle reliably.
     
  7. Oyeboten

    Oyeboten Member

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    Of course, many of the old Flintlock and Percussion Single Shot Pistols were 'Big Bore'...


    No 'NFA' scowls there...
     
  8. Philo_Beddoe

    Philo_Beddoe Member

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    Exactly, I think it would be practical for pistols where distance shooting isnt a concern

    Although there is something about a more aerodynamic bullet that only expands once it hits its target.
     
  9. Oyeboten

    Oyeboten Member

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    Indeed...


    But, if one shot...20 feet or less...a .72 Caliber, 400 Grain-ish?, Pure Soft Lead Ball, going 700-800 FPS, will flatten out nicely enough...


    Bear in mind...a .570 Ball weighs around 280 Grains


    And bigger Bore, they get a lot heavier, and fast...
     
    Last edited: Nov 13, 2009
  10. mustang_steve

    mustang_steve Member

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    Honestly, how would one manage the recoil from this behemoth caliber?

    Even at a velocity barely able to reliably actuate the slide of the pistol, it would be an absolute beast. Excessive recoil is not tactically sound ;)
     
  11. Steve C

    Steve C Member

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    Simple answer is there's not enough demand for such a pistol to warrant its development or production.

    Self defense pistols have to be concealable. Service pistols have to be light enough to pack around all day on the hip. A pistol has to be light enough to draw and aquire the target quickly. Recoil must be sufficiently tame to allow for fast follow up shots and acquisition of additional targets. Doesn't matter if you have the best one shot man stopper in the world if an opponent can put one or more rounds of lesser power into you before you get one shot off.
     
  12. Shadow 7D

    Shadow 7D Member

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    damn, I found a 30mm derringer from Europe (site online), now that is what the OP wants, just buy the ortho visits when you buy the derringer so they can fix you broke wrist when you use it.

    Fast or big, or HP that go fast and dump the energy quickly getting big.
     
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