Well, I think there are a couple of things more than weight and cast regarding perceived (suffered) recoil. All the other things equal, a wide recoil pad spreads the recoil over a bigger surface and the perceived recoil is less. And a reasonably soft recoil pad makes wonders. At this moment I have several rifles in my lock; one is a very light (7 pounds with scope) bolt action .375, with a custom glass stock (fairly straight, very little drop) and a Decelerator pad; I can shoot a full box of cartridges without problem. My 450 BPE is also very light (6,5 pounds) and lots of drop. With a soft and not very wide recoil pad is not at all unpleasant to shoot (400 grains of lead bullet at 2.000 fps).
And the other side of the coin. Years ago I had a Thomson Center Contender single shot in 45/70; with three or four shots, my shoulder wasso painful I could barely touch it. The problem vanished when I changed the hard and bad shaped recoil pad for a softer one.