I learned something today

This is a discussion on I learned something today within the Defensive Ammunition & Ballistics forums, part of the Defensive Carry Discussions category; The 1989 FBI paper entitled "Handgun Wounding Factors & Effectiveness" states page 11: The single most critical factor remains penetration. While penetration up to 18 ...

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Thread: I learned something today

  1. #1
    Member Array CougarRed's Avatar
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    I learned something today

    The 1989 FBI paper entitled "Handgun Wounding Factors & Effectiveness" states page 11:

    The single most critical factor remains penetration. While penetration up to 18 inches is preferable, a handgun bullet MUST reliably penetrate 12 inches of soft body tissue at a minimum, regardless of whether it expands or not. If the bullet does not reliably penetrate to these depths, it is not an effective bullet for law enforcement use. FN36

    Footnote 36 is:

    Wound Ballistic Workshop: "9mm vs. .45 Auto", FBI Academy, Quantico, VA, September 1987. Conclusion of the Workshop.

    So I went and found the 1987 Workshop. Guess what? The workshop concluded something different. Near the end it says:

    The single most critical factor remains penetration. A handgun bullet MUST reliably penetrate 10-12 inches of soft body tissue at a minimum, regardless of whether it expands or not. Penetration up to 18 inches would be even better. If the bullet does not reliably penetrate to these depths, it is not an effective bullet for law enforcement use.

    I wonder how 10-12 inches in 1987 became 12 inches in 1989? Perhaps they wanted to hold the ammo manufacturers to a higher standard? Perhaps they worried if they said 10-12 inches, they knew it would be interpreted as 10 inches?

    In any event, in the past I have looked at the 12" penetration standard as a pass fail test for my ammo selection. I don't think I am alone in that thinking. This discovery introduces shades of gray in the penetration standard.

    And if 10-12 inches of penetration is minimally acceptable for law enforcement (per the 1987 FBI workshop), this can have enormous implications for certain ammo.

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    VIP Member Array Easy8's Avatar
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    People got fatter
    voodoo304, R040607 and WHEC724 like this.

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    VIP Member Array NONAME762's Avatar
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    Quote Originally Posted by Easy8 View Post
    People got fatter
    No doubt you're absolutely positively freakin' right Easy
    Firing a suppressed is on my Bucket List.

    I'm just a spoke in the wheel but not a big deal.

    America...a Constitutional Republic. NOT a democracy as the liberals would have us believe.

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    VIP Member Array Phaedrus's Avatar
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    I doubt people got substantially fatter from '87 to '89. I know I didn't!
    "When Fascism comes to America, it will be wrapped in the flag and carrying a cross." - Sinclair Lewis

    “You can tell whether a man is clever by his answers. You can tell whether a man is wise by his questions.” - Naguib Mahfouz

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    Most likely the the intent of the statement in the '89 paper was to urge a MINIMUM of 12" penetration floor. They obviously wanted closer to 18". Why give manufacturers wiggle room of 10" to 18" when they really wanted 12" to 18"?

    I'm sure most of us here would agree. Deeper holes are better.
    "Mind own business"
    "Always cut cards"

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