What caliber are you shooting that you need a muzzle brake? Would a PAST recoil shield suffice? You can check them out on Midway's website. I use their thinnest model for shotgunning and 30 caliber range sessions and it makes a huge difference. They make thicker versions for magnum rifles also. If you are just shooting at the range, a Lead Sled would be another alternative.

I would really think hard about a brake. The noise to you and to bystanders is enough to cause permanent hearing loss even through earplugs or some muffs.[:@] If you are shooting big calibers, be advised that many localities in Africa and North America prohibit muzzle brakjes because of the hazard to guides' hearing. You want to be able to hear a wounded Cape Buffalo coming up behind you in the bush...[:-]