Sounds to me like a small case of stubbornness. Four times breaking your back ought to be enough to convince you to move down the scale a pinch in order to rediscover the joy of less pain while shooting. But if you just can't stand the thought of giving up on the ,50 BMG then consider this:
The four basic components to recoil reduction are:
Weight (rifle)
Redirecting the plasma (brake or suppressor)
Ejecta weight (that's powder for the rest of us)
Bullet weight
You can always increase the weight of your rifle if you shoot for pleasure but often competition rifles have weight restrictions unless you shoot unrestricted.
As above, I have had good luck with the clam shell brakes except when shooting next to another shooter...


. The alternatives are the T-series brakes from New Zealand. I have used the T5 Terminator with good success on the larger caliber rifles in competition. Not as expensive as the Cyclops.
T6
7/8×14 or 1X14 threads. 6″ long and 2″ O.D. 2 lbs 3 oz. It is a beast of a brake for your 50 BMG, 416 Barrett, Cheytac variant. Bead Blasted SS
Email me directly for inquiries
Brian@Shoot-Long.com
Find a lighter, high performance load which reduces the powder weight.
Lighter weigh bullets from Cutting Edge:
https://cuttingedgebullets.com/510-660gr-mtac-match-tactical-50ct