Well Craig I'm not going to argue with you because you refuse to listen or comprehend the laws of dynamics
and that's fine but I'll say this
energy of a bullet formula (one of a couple different ones)
velocity squared divided by 7000 divided by 64.32 x bullet weight in grains = ft.lbs of energy
you'll see there are two factors that will increase the energy weight and velocity
If you increase either then your energy in ft lbs increases
Now would you rather get hit by something traveling at 20 ft per sec or the same object moving a 100 ft per sec?
Energy plays a very important part of hunting and killing an animal
Personally I want to hit him as hard as I can, without penetrating clear through
Because the harder I hit him the more it will shock him and if the bullet stays inside more of a tendency to knock him off his feet if he's off his feet and properly hit in a kill zone he can't run off
I say again you want as much energy from the bullet expended in the animal
the bullet that goes clear through wastes a lot of energy outside the animal
a 170 gr bullet at 1000fps 377. ftlb a 300 gr bulet (many muzzleloads) 666 Ft #
one you want blood loss lots of it two you want hydrostatic shock again lots of it
that's where a large heavy bullet comes into play
the FBI prefers the bullet not to over penetrate for numerous reasons
this being one
Overpenetration is when a bullet passes through its target and out of the other side, risking damaging something or someone else beyond and preventing the bullet from leaving all its energy inside the intended target.
Over-penetration is detrimental to stopping power in regards to energy. This is because a bullet that passes through the target does not transfer all of its energy to the target. Despite decreased tissue damage due to loss of transferred energy on an over-penetrating shot, the resulting exit wound would cause increased blood loss and therefore a decrease in blood pressure in the victim. This effect on both persons and game animals is likely to be incapacitating over the length of the entire shooting event.
but believe what you will