8 seconds if I'm not wrong

For a sniper, there target are is always medula oblongata, the part of brain that controls the spinal reflex. When that is damaged, all your system just shut down. Just like the neck twist you see some of the assassins doing in movie.

If that is not viable, the next target area is the heart. Heart stop = death due to oxygen depravation since heart pumps blood and blood carries oxygen and our cells need oxygen.

If you are using a Barretta .50 anti-material gun then all the above point is moot because a direct hit with a 0.5 calibre round will split a body in half.

How do I know? From Channel 555 of Astro.

Xuzen

In my opinion:

It is very hard for a bullet to kill people instantly.

Lets say:

1. Bullet hit your arm. Nothing harmful except pain. If the bullet pass through, even better. If the bullet calibre is big enough, your hand is a history. Die of massive bleeding. Your life expectancy, 10 minutes tops without any medical help.

2. Bullet hit your leg. Depends on which is the location. If its passed through the muscle, its good, but if its get lodge inside, necrosis, blood clot or deep vein thrombosis that will give you brain hernia, stroke) , massive tissue death, bone fracture etc could easily happen. BUT, if the bullet hit one of your femoral artery ( carries the fresh, high pressure blood from heart) , AND if you are in a standing position, you will be dead fish in 3 minutes tops. If you are lying, apply some pressure, 10 minutes for you to say goodbye if they are no medical help.

3. Lets say the bullet hit your torso/abdoment and the upper part of your groin, it really depends on what type of bullet hit you and where is the impact location. Most likely, once you are hit, you will faint out due to shock trauma. Your body register a lot of pain sensoric information to your brain, which caused it to malfunction and then shut down for restart. Most probably, you will die in massive blood lost. A hit in the heart, you are as good as dead. In this stage, you are only lost your conscious, that means, you did not die due to hit by a bullet. You die because of massive blood lost due to a bullet hit you.

Most weapon manufacturer had develop bullets that will change its trajectory once it reaches different medium. Example, a bullet fired through the air landed on your liver, once it hits your liver, a medium change happen (air to your body (liquid+solid)). The medium change altered the bullet trajectory. So, its now not only hitting your liver, the bullet could also pass through your pancreas and stop at your intestine. Three place hemorrhage (inner bleeding) instead of one.

4. The worst case come here. Bullet land on your head. First, know that a bullet hit your head does not mean you are 100% dead. It really depends where the bullet goes, but wherever it is, you stand on a very slim chance. The juice come now, a shot in the head, can only INSTANTLY kill people is a show land on your occipital lobe. Occipital lobe located between your eyes and same level with the temple (inline with your eye brow). Why INSTANTLY ? because occipital lobe controls your body involuntary movement, such as heart beating. So, hit the occipital lobe, the next very second, you are dead, cause your heart does no longer beat.

I hope part of my reply answered some of your question. Thanks.

gee....you don't know much about the human body do you...
1)the heart will beat on it's own even when you cut the nerves supplying to it....
2)occipital lobe does not control involuntary movement....the brain stem does
3)dead because heart don't beat...haha wrong again....go read sensitivity of different type of tissue when deprived of oxygen

Very appreaciate for your reply. Yes, it really help in point.....


"1)the heart will beat on it's own even when you cut the nerves supplying to it....
2)occipital lobe does not control involuntary movement....the brain stem does
3)dead because heart don't beat...haha wrong again....go read sensitivity of different type of tissue when deprived of oxygen"

Thank for your reply & appreaciate.

"dead because heart don't beat, haha wrong again...- oxygen problem"?~Yes, for certain cases...if the heart don't beat, the victim maybe can die slowly (not die instatly), the main brain(concious) may turn off first, but other parts like hand & leg still have the reponds, rite?

But for instantly die (all system connection & power of body, may shutdown in nano second), i believe the connection between each of our organ/body part connect very closely...like the brain send the signal to hand or body to dodge an attack, all this happen in a time of second or maybe least......

means, they got dead zone on our body (heart & brain Or..???)??

But die instantly ~ "instantly" ........hmmm.. i think still got a deep distance to dig & explore......

Thank for all the reply....any point of view r welcome....

A bullet won't kill you instantly unless you got shot in the head.
If you get shot on the body, means you will either bleed to death or your vital organ will shut down which will lead you to death.

Answer : A bullet does NOT kill INSTANTLY

As an Engineer, instantly to me is probably 0.02s, the fastest human reflex. But for a physicist, this could be anyway between 0.0002 to 0.000000000000000000000001 etc

Clinically a person is alive as long as the heart is still beating. A headshot would only render you brain dead ... that is said to be INCAPACITATED but still ALIVE (for another 2-4 minutes).

Here's a few things that happen when shot:

- Blood lose
- internal damage causing hemorrhage / blockage of blood flow
- damage to organs that perform vital functions

Momentum. The impact on the body is too large for a body to bear it.