I didn't say I like the bullet to say in side. My commit was what ever energy remaining after the bullet exits the animal is wasted.
My point was more about people getting hung-up on a few hundred FPS such as comparing the 308 to the 30-06. Once the bullet hits the animal does it's job and goes out the side that extra few hundred FPS is useless. and you are paying for it with recoil and powder.

This is almost a moot point with the bullets and rounds we have now days, most bullets will exit and do a lot of damage. Even shotgun slugs have come a very long way. the modern 20 ga slug is 100% better then a 12 ga was just 5 years ago.