Before giving up, a couple of thoughts:
One is that of technique. Most people instinctively back away from a hard recoiling rifle, thinking the less contact at the moment of ignition, the less hurt. The opposite is true. A loose grip just gives the thing a running start to smack into you. You want to pull the gun firmly into the shoulder to maximize contact surface area and prevent it from ever getting up to speed in the first place. Make the recoil accelerate your whole body mass from the start, and not just the mass of the gun. That slows it down. Make sure you get as much buttplate contact area as you can; no holding it up so the toe of the stock is all that's touching you.
Second, if you've got a touchy shoulder or the buttplate just doesn't conform to your particular shape well enough, get a PAST magnum recoil pad to wear under your shooting coat or shirt and pull the stock firmly into that. It will distribute the impulse more evenly.
Do wear very good hearing protection with that sonic backblast. Many now put earplugs on under muff-style protectors when shooting with muzzle brakes.