I dunno. I have 2 .458 Lott rifles. One Ruger RSM and one CZ550 Magnum in a fiberglass stock. I have to say that the RSM is downright unbearable. I'm not sure if it's the stock, but that one seems to kick harder and also hits me in the jaw as soon as I hold a bit lighter than properly. Now, we can only shoot from the bench at the one range I shoot at so it's not the most comfortable shooting position to begin with. I will have to try it from a different position elsewhere. The CZ seems to be a bit more manageable in terms of recoil, but with both rifles it's really the muzzle blast and the resulting concussion that bother me more. Couple, three shots and I start to get a headache. It sucks to a point of me trying to sell the Ruger right now and hoping to downgrade to .404 Jeffery.
Overall I don't think I'm recoil sensitive but for sure I'm finding as I get older, I like less and less recoil.