All this talk of loud brakes. When shooting my Weatherby's that have factory brakes or my buddies 300 RUM Sendero with a Holland brake on it, I can't tell any difference when shooting them as far as noise or concusion. I never shoot without earplugs. Now get off to one side even a little and I can tell a big difference in the sound level with a brake. That's why when they shoot I stay more behind them than beside them. This is even when I shoot a 50BMG with a rearward angled tank looking brake that will launch 1/2 inch rocks from the ground when fired from a bench. Right behind it is no worse than without it. They are anoying but I put it right up there with not standing downwind of a smoker. I just deal with it.
I wasted 20 years believing this and other rumors. I have found out that I can see a difference in high end optics, a 1 pound trigger works fine on a hunting rifle, Free-bored Weatherby's will run groups, and muzzle brakes don't bother me when I shoot. So now I'm in the process of buying high end optics, Weatherby's and putting muzzle brakes on all my rifles; I already fixed all my triggers.
Sorry abount the rant. I just had that all pent up and had to let it out somewere.