? I know that double lung hits are for all practical purposes always lethal, but am suprised at how many people really think hitting deer anywhere in the lungs is entirely equivalent. Disect your next kill. Lungs are NOT homogenous. If you cut larger air (bronchial?) tubes and blood vessels at the center (and slightly forward of center) of both lungs, any given deer will die faster. Closer to the edges of the lungs takes longer...sometimes much longer.

I have noticed deer falling a shorter distance from stand when hit high through both lungs, but it seems to me that is because they do not run off as fast (as a rule) when shot like that. They run (or trot or walk) 20-50 yards, stop, and tip over. A more solid lung hit (and heart) and they take off on a dead sprint covering more ground in a shorter time span.... as a very general rule.

Then there is the major arteries and veins branching off the top of the heart - cut one and that has an impact on bloodloss and eventually muscle death as well. That all being said, a double lung is still a dead deer, you just have to find it.