I am sorry, I mean no disrespect, but Vais and Gentry's Quiet Brake is the least effective of all the muzzle brakes I have owned since 2003. I could not get rid of them fast enough.
Ed, I certainly take no offense from you or anyone else on the subject of the effectiveness of a Vais or Gentry brake. I just can't fathom how my ~8# 7mm RUM is very comfortable to shoot if they are that ineffective?
Really makes me want to try a side discharge brake to compare, but I'm afraid of the concussion that so many refer to.