I concur with Robgunbuilder on all points! I really do not notice much difference in noise from my 500 with or without the brake (it is the only rifle I have a brake fitted to). Of course bystanders tell me it is quite a bit quieter with the brake off!

The effectiveness of the brake, and it's relative noise level, are directly proportional to the muzzle pressure. The higher the muzzle pressure, the better the brake reduces recoil, and louder the blast! It is that simple. The shorter your barrel and the slower your powder the better the brake will work and the louder the blast.

Scott