Note; I did NOT mention that savoured of all terms ' Magnum ' SC did
My own opinion, rests with bullet selection, to a point.

be it flat, round, or sharp
I have used the 338WM on deer, and found, with the right bullet, it was quite capable of good clean kills without a big waste of meat.
The trouble I found, was that to achieve a good clean kill without a lot of wasted meat, most of the bullets energy will be expended in the ground on the offside, unless you download the cartridge, and use a lighter bullet. But what's the point

in that?
So I went back to lesser cartridges. But this year, a Sierra Game King from a 308 (88 Winchester) hit bone. I picked up a chunk of meat that would fill a tea cup off the ground before I even found the deer. The exit was enormous, the shoulder was hamburger.
The 45-70, I've used some hot loads, some of you have even fired them. What it can do to a deer is awesome. So, I no longer use those hot loads. With standard loads, the 45-70 is one of the best at doing quick kills without wasting meat.
The plain old 270 Winchester with 150 grain Winchester silvertip factory loads, at 50 yards. Blew a hole so big in the side of a doe, that her organs were found laying on the ground, along the trail to her demise.
So, again, how much is too much?
There are a lot of variables. That 150 grain 270 load wouldn't have made such a mess at 150 yards or so ... would it?