Like "Shot 1 " said, it depends on the brake, Brakes like the JP, and others in the "shark Gill" class are the most effecent, AND also give off the most concussion directed to the rear.
I've got a 30-30 with a JP brake. With healthy charges of 4198, 3031 RL-7 and 125/130 & 150's the whole pistol will actually move forward when shot off a bag or other types of rests.
Let us know who's brake, or style you get.