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9mm vs. 40 – Is the .40 Caliber a Better Handgun Cartridge?

Bassbob said:
Do you have a link to that study ?
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it a book... the study lasted two years and produced thousands of pages of documentation.
here's a link to the book....

books.google.com

Forensic Analysis Of The April 11, 1986, FBI Firefight

One of the deadliest firefights in the history of the FBI occurred in 1986 in Miami, Florida. Lasting more than four minutes, the fight claimed the lives of two FBI agents and two extremely violent master criminals and severely injured five other FBI agents. On the 10th anniversary of the...
books.google.com

TitleForensic Analysis Of The April 11, 1986, FBI Firefight
AuthorW. French Anderson
Editionillustrated
PublisherPaladin Press, 2006
ISBN1581604904, 9781581604900
Length152 pages

this stems form the fact that, during the 1986 shootout, Platt killed two agents and seriously wounded several others over a three minute period after being solidly hit in the chest with a 9mm round. Forensically, the wound did not allow for a rapid drop in blood pressure due to the fact that the skin closed up around the entrance wound.
 
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I carried a .45 LW Commander before my first retirement and was issued a G23 in .40 for the job I retired from two years ago. When I was shooting lots of Steel Challenge the .40 G22 was my favorite as it combined higher capacity with decisive hits on falling steel. I gave my Browning Hi Power .40 to my son for a post-deployment gift and still miss it. I've moved on and am all in on the Wilson EDC X9 and X9s if carrying an auto.

With modern ammo the 9MM 'poodle shooter" is a fine defensive round. For a camping gun I carry a .44 with lighter magnum loads. I did pick up a very sweet SIG 239 SAS that happened to be in .40 (in theory) for when I want to appendix carry but mostly because it's a neat little gun that was a smokin' deal.

Modern ammo has very much evened out the field for duty rounds. If I were back in a patrol car and given the choice I would probably pick the .40 due to slightly better penetration through auto glass and barriers, but I wouldn't turn down the job if mandated to carry a 9MM.
 
CCJ said:
it a book... the study lasted two years and produced thousands of pages of documentation.
here's a link to the book....

books.google.com

Forensic Analysis Of The April 11, 1986, FBI Firefight

One of the deadliest firefights in the history of the FBI occurred in 1986 in Miami, Florida. Lasting more than four minutes, the fight claimed the lives of two FBI agents and two extremely violent master criminals and severely injured five other FBI agents. On the 10th anniversary of the...
books.google.com

TitleForensic Analysis Of The April 11, 1986, FBI Firefight
AuthorW. French Anderson
Editionillustrated
PublisherPaladin Press, 2006
ISBN1581604904, 9781581604900
Length152 pages

this stems form the fact that, during the 1986 shootout, Platt killed two agents and seriously wounded several others over a three minute period after being solidly hit in the chest with a 9mm round. Forensically, the wound did not allow for a rapid drop in blood pressure due to the fact that the skin closed up around the entrance wound.
Click to expand...
Direct quote and page, please.
 
HansGruber said:
Direct quote and page, please.
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If you want to call me a liar without doing one ounce or work so you can retain your views of the world... you are fee to do that. You are free not to believe me... Read the book. It's buried in their somewhere. Read it and draw your own conclusion...

It is why the felt that they needed to move to a larger caliber.
 
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That FBI study is pretty well known. So are the reasons for 9mm ammo from back then being inadequate. This is the first time I’ve heard anyone make the claim that the wound channel closed itself off. I mean even if that were true it’s not going to stop blood loss from vital internal organs.
 
Bassbob said:
That FBI study is pretty well known. So are the reasons for 9mm ammo from back then being inadequate. This is the first time I’ve heard anyone make the claim that the wound channel closed itself off. I mean even if that were true it’s not going to stop blood loss from vital internal organs."
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"closed off" as in restricted due to the ability of skin (elasticity) to restrict a small hole (such as created by a 9mm) to reduce/impede the loss of blood to the point that blood pressure remains viable for Consciousness.

There are limits to the bodies ability to restrict holes and .40/10mm seem to exceed that ability.

While it is true that damage to internal organs will increase the overall blood loss and does pay a significant role in incapacitating an individual, fluid pressure will also act as a restriction/impedance to blood flow... i.e, the weight of the fluid (blood) pressing against atrial structures acts as a compress. As the body cavities fill up the pressure also increases. But I think the point in the FBI findings is that internal damage is not a given and the wound channel itself, if properly sized, will enable an incapacitating wound. Now, there are endless scenarios about the capabilities of any particular calibers to do, or not do the intended. The diameter of the 9mm entry wound was just one of the many, many items singled out by the FBI as fixable. Hence, the move to .40
 
I bought a Para-Ordnance Double Stack 1911 Government model in 45 ACP. It was a promotional package with 4 magazines.
This is when they first launched.in the early 90s.
Slow fire was easy to control but the grip circumference was too much even for my big hands when I attempted speed drills and double taps.
I sold it and gave the money to my wife.
I’ll stick with a stock single stack 1911 in 45 ACP.
 
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