Well, I haven't read all 34 pages, but assume much of this has been beaten to death. I see it like this:
Ft-lb recoil numbers are only a small part of the story. They give you a place to start, but perceived recoil has a lot to do with duration of the recoil pulse, stock design, technique, shooting position, muzzle blast, muzzle rise, etc. Any noxious stimuli received by the brain and previous bad experiences influence what happens when you pull the trigger. It doesn't take much of a flinch to really blow up EVERY advantage of a hyper-accurate rifle. It takes me forever to overcome getting thumped by a scope.
I love suppressors and hate muzzle breaks. The muzzle blast is just as noxious to me as the shoulder thump. I can shoot my stock Mk V .300 Weatherby about 15-20 rounds off a bench before it's not fun. Standing, it's not bad at all. The .338 or .340 Wby is about 10 rounds. I could shoot the suppressed 300 Win mag all day, no problems. Somewhere in the .260 AI to .280 AI is the sweet spot for me. But, I've learned not to push it, focus on technique, and not get to where my primitive brain causes bad habits.
The .416 Rigby with 400 gr bullets is an absolute bugger from a bench but not all that bad standing up on the sticks. I usually do 10-12 rounds in a session, never missing an 8" paper plate at 200 yards - plenty good enough for African dangerous game, as I verified last summer in the Caprivi. 2 shots, 2 dead critters. I very unashamedly put a limb saver pad on it, and used it while hunting.
I have a youth model Wby Vanguard in 7mm-08. With 140 bullets the thing is a hideous demon to shoot. I'd never let a kid touch it off, even if I hated him. I don't know if it's the weight, the stock design, or just what, but there isn't a rifle in my collection I enjoy shooting less.
.350 Rem with a rocking chair leg for a stock = miserable. Browning safari .375 = piece of cake. It all depends!