It seems to me most of the logic for higher charges relates to how far the deer/elk ect travels after it is shot.
I hunt in the woods of the east where you generally can't see more than 50-75 yards and as I sit here and rack my brain, I can only think of 1 deer in the last 4 or 5 years that got out my sight after being shot. The majority of them didn't travel more than 20 yards.
Are people having deer run off consistently?