At 200 yds a double lung shot should have passed through with a 7mag and definetly a 75 yd shot with a 300 mag. I've shot numerous elk with a 270win, 150gr nosler partition, 2800fps and had pass through several times. The last one was a small 5x5 at 325 yds and the pass though blew blood and lungs all over the snow bank and elk dropped in his tracks.
While a bullet may have more energy when it hits the target closer, as opposed to further out.....it'll also generally expand more due to that extra energy (I guess). Less frontal area aids penetration and more frontal area hinders it. Kind of door opens both ways scenario.
I'd have to think about it, but I suspect I have observed more exits on elk at 3-600 yards than I have at closer ranges, with the same bullet, muzzle velocity and hit location.
