I certainly haven't read all 85 posts, but I have read enough to see it is no different than the other similar threads that come on here with regularity, which is the 243 is suitable for coyotes, but when you go hunting, use a hunting rifle.
And to clarify, that is not my thinking. A good hunter will use a 243 on moose and not consider he is handicapped by using it.
I plainly remember the great variety of firearms the meat hunters used to shoot great numbers of moose and elk, in the depression years. The 25-35, the 32-40, the 250 Savage, the 351 Self Loading, even the 32-20 was used by a trapper I knew, who killed moose with it.
There should be little argument that the 243 is superior to any of these calibres for big game.
Read any book on Mountain goat hunting and note what they recommend for a rifle. The 30-06 is usually considered minimum. I guided our fourteen year old son on a goat hunt and sat by him while he made a one shot, bang/flop kill with his 243, on a better than average billy.
A couple of years later he was going to Jr. High, I was away, but one Friday in the late fall, he and his school pal, who was driving a pick up truck, decided to take the day off and go moose hunting. His pal also had a 243.
When I came home he told me about it. They were walking through the scrub bush, with my son behind, in the position I had taught him to walk when with another hunter, when a bull moose appeared ahead of them. His pal fired one shot and the moose fell, dead when they got to him, no other shots required.
I asked my son what ammunition his pal was using and he said his friend, "didn't have any shells for his 243, so I gave him some of your hunting loads!" My hunting loads were 100 grain bullets chronographed at just over 3100 fps, in my 243 Ruger with 22 inch barrel.
And by the way, they dressed that moose out, got some more friends to help them and saved all the meat!
So don't get too hung up on ballistics when talking about hunting rifles.