In myexperience, a close up shot with a high powered rifled is more likely to pass through the animal without significant expansion and therefore do little damage. I have had to repeat shots (as the critter still walks!) at close ranges vs. one shot "drops" at longer distances. I accredit this to the bullet slowing down and expanding on impact as it was designed to do.
The 438 grain slug at about 100fps slower at the muzzle is going to deliver almost 300 ft lbs. @ 50 yards, shock the animal, expand to do maximum internal damage, and drop the critter where it stands.

Apparently you disagree. More power to ya!