Best Choices for Self Defense Ammo
The criteria for rifle ammunition is essentially the same as for handgun bullets, and many of the same design factors apply. One important difference for rifle ammunition is that the velocities are much higher, and the effect of the temporary cavity starts contributing quite a bit towards creating damage, especially as one moves up in caliber/velocity.
Something to consider.
This is from Doc Roberts, shot placement.Quote:
The severity of any injury resulting from Temporary Cavitation is highly dependent on anatomic and physiologic considerations. For example, elastic, flexible soft tissues, such as muscle, bowel wall, skin, blood vessels, and empty hollow organs are good energy absorbers and are highly resistant to temporary cavity stretch injuries, while inelastic tissues, such as brain, liver, kidney, spleen, pancreas, and completely full fluid or gas filled hollow organs are highly susceptible to severe splitting, tearing, or rupture due to Temporary Cavity stretch insults.
ETA: Wound Ballistics 101
By Paul Gomez
Kinetic energy does not wound. Temporary cavity does not wound. The much
discussed "shock" of bullet impact is a fable and "knock down" power is a myth.
The critical element is penetration. The bullet must pass through the large, blood
bearing organs and be of sufficient diameter to promote rapid bleeding.
Penetration less than 12 inches is too little, and, in the words of two of the
participants in the 1987 Wound Ballistics Workshop, "too little penetration will get
you killed." Given desirable and reliable penetration, the only way to increase
bullet effectiveness is to increase the severity of the wound by increasing the size
of hole made by the bullet.
I kept thinking of you when he kept going on about how crappy handguns are, etc. He said that a handgun round has to strike a vital organ inorder to be effective as if a rifle doesn't live by the same rules. I have a Pat Rogers training DVD where he explains there's a difference between a shot to the head as opposed to being shot in a vital area of the brain. There are people, for example, that have been shot in the head by a 5.56 and have survived. He goes on to emphasize shot placement, etc.
I think you would also have a different take on his summation of what resulted from the Miami shootout.
I do pay attention to FBI tests. Why not benefit from their studies? Stopping BGs after all is their business. I'm assuming they take anecdotal evidence from the streets into account as well. I don't think their tests are completely arbitrary in nature. I really don't know why they can't use dead pigs for their tests as opposed to gelatin. With the wild pig population being as it is, why can't we test on the ones that have already been harvested?
If you do not take anecdotal data from the street you are only getting half the information.
Tactical Life Defense Loads of Choice: The Word from the Street
Well, yea, I do find relevance in the FBI Standards. The Agency developed these standards in the aftermath of the Miami shootout where agents were killed. These standards were designed to give their agents a fighting chance in the next gun battle. Its not like a bloated agency just writing some law on how to dispose of used light bulbs or whatever. Where I live, people wear multiple layers of denim, flannel, sweaters, jackets, etc over a large portion of the year. Yes, I feel more confident knowing the HP bullet I carry has a good chance of penetrating through those layers if the need should arise. What if you need to shoot through auto glass in response to a car jack attempt? I'm going on memory here, but I think the concern of some manufactures, including, I think Hornaday, was ( is) the possible liability, or at the very least, negative PR, resulting from an accidental death in the event of over penetration of an "FBI "bullet". I think the feeling was (is), the FBI standards were designed for tactical situations that the average 'Joe Blow' is not likely to encounter. Ok, just my .02
Ladies & gentlemen 40 bob, and sgb. In the military tests about replacing the .38 long, they exerimented extensively on human bodies and live animals. They came to the concluson that to 'reliably' stop a human, the projectile would need to be 3 " in diameter in the range of pistol velocities 12 - 1300 fps. They included the 9m military cartridge and the 7.63 Mauser.
Luger even submited 2 .45 acp Lugers for the test. Try to buy one today he he he
Regarding cavity formation, it is valuable for possibly inducing hydraulic shock, which could be quickly fatal if it reached the heart or the brain, but not considered reliable.
Don Jose de La Mancha