Muzzle breaks reduce recoil, but it's not worth it. They are a hazard to the shooter and anyone around. I would not own a gun of any sort with a muzzle break. I once had a M70 .338 Win. Mag. with their whizz-bang muzzle break "BOSS". It made the .338 feel like a .243. Still I didn't like it and got rid of it. I kinda like the rock of my custom FN Mauser .338. Sure didn't like the blast or the added weight of the BOSS on that M70.

I don't know of any hearing protection fully effective under the conditions you describe.

I have a pair of Peltor shooting muffs that have microphones and electronics to allow normal sound through but shut down over a certain level. You might try them. I thought they were great when I got them, then the batteries ran out. I just never replaced the batteries, so I must not have thought that much of them after all.

In fairness, I only shoot on private property. If I had to shoot at a public range I would use these muffs without a doubt.

Hope this helps,
Curl