It works well to a point - American Precision Arms Micro Bastard The Answer Muzzle Brake

It reduces recoil well. But on a 300 Win Mag shooting 200 grain bullets there is no way to adjust the break. You have to take out all 8 set screws to reduce muzzle jump. My rifle weighs 9.5 lbs and you still cant watch the target through the scope after firing. It makes shooting the rifle much more pleasurable and manageable but I think my expectations were to high. On a smaller caliber say anything based on a 30 06 or below you would probably be able to maintain your sight picture. Still I would recommend it because it helped a lot but you have to be realistic about what to expect. Probably not a brake out there that you can maintain your sight picture using a 300 mag unless your rifle weighs north of 12 pounds.