I shoot a 338/378 Weatherby. Not exactly a big bore but the hammer of Thor for sure. It is braked and I can tell you it is loud. If are not wearing hearing protection you will sustain permant neuro sensory damage to your hearing. I use electronic ear muff attenuators. They cut out sudden loud noises above 85db while still allowing you to hear normal converation.
Most GOes in Africa do not allow muzzle breaks when hunting dangerous game. When you touch off the rifle you go deaf for a while and you are unable to hear instructions and take directions. Not a good thing if you have wounded Mbogo (Black Death) You could get yourself stomped into a red mud puddle if you are unable to follow vital directions because you are deaf.
Oh one last comment, it shoots a five shot group at .435MOA at 100 meters. Ya gotta like that.