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  1. #1
    Join Date
    Feb 2004
    Location
    Delaware
    Posts
    66

    Default FMJ vs Hard-Cast

    which is harder, ie. less prone to deformation?

    specifically talking about handgun rounds...
    "ya darn'd igit, I'mma gonna fill'ya fulla hot lead!" - Yosemite Sam

  2. #2
    Join Date
    Sep 2003
    Location
    Brazil.
    Posts
    17,201
    Quote Originally Posted by dsapp
    which is harder, ie. less prone to deformation?

    specifically talking about handgun rounds...
    IMHO,
    Hard cast. FMJ bullets generally have a soft lead swagged core.
    There are probably exceptions. Brass bullets do not count gents. I'm saying this before somebody 'delights' in 'shooting me down' !
    A solid bullet is generally a better penetrator.
    Hopefully David DiFabio will string along on this thread.

    Regards,
    Anthony.
    If you have to fight, do not fear death.
    We will all die one day, so fight skillfully and bravely!
    And if it is to be that you die, then at least go to God proudly.
    Meet him as the proud warrior that you once were, and not as a sniveling coward.
    Nobody lives forever.

  3. #3
    Join Date
    Sep 2003
    Location
    Arizona
    Posts
    1,217
    Deformation on feeding off a magazine or hitting bone?

    I guess I'd ask why?

    For repeated loading/unloading, the FMJ will hold up better assuming equal crimps.

    If you are looking for straight line penetration, the rounded profile of FMJ's can make them change course when hitting bone, while a hard cast lead SWC tends to give better straight line penetration. Many of the top handgun hunting loads in history have been lead SWC for this reason. Cooper liked the old truncated cone shape FMJ as a compromise fighting round.

    Not sure if that helped, but there you go.

  4. #4
    Join Date
    Jan 2008
    Posts
    15
    if your ammo is Deformation from feeding off a magazine.. you got some problems!

    Deformation on hitting bone, might work in your favor. once deformed the round might tear tissue, cause more bleeding than a smooth round nose bullet.

  5. #5
    Join Date
    Aug 2012
    Posts
    1,202
    Bringing Anthony back to life...

  6. #6
    Join Date
    Oct 2004
    Posts
    7,996
    Quote Originally Posted by Danneskjold View Post
    Bringing Anthony back to life...
    I saw the post and I though my senile brain was mistaken about Anthony's passing.

    God Rest all of our departed,
    Choirboy

  7. #7
    Join Date
    Aug 2011
    Posts
    625
    I suspect the difference is pretty much nill - big game hunters esp bear hunters like heavy, hard cast bullets out of monster bore revolvers in an attempt to break a bears shoulder while charging so maybe there is something to it

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