I want to run this by you all and get your feed back on this issue. I have a 338 Edge that was built by my local gun smith. The gun with scope (no ammo) weighs around 13lbs maybe a bit more. I have a 4 port Muzzle Brake on it. I do not want to name the maker of the port until I have tried a few things. My brother also has a 338 Edge (15lbs) with the same muzzle brake. His 338 kicks like a 243, mine kicks like a 300 RUM shooting 200 gr bullets (un braked) it kicks!! I have a brake on my 300 RUM factory Rem 700 and I shoot 210 Gr bullets at 2944 and is FUN to shoot, the 338 IS NOT fun to shoot!!!! The brake on my 300 RUM comes from the same company and is a 3 port, both brakes have a top dead center and need to be oriented correctly, both are. I spoke with the individual who sold my brother his rifle about this issue. I learned he had the same problem with the brake and had his gun smith modify and open the brake up more. My plan is to place my brothers brake on my gun, shoot it and see if there is a difference between the two. If there is I will take both to my Smith and have him make mine a twin of my brothers. I hope someone has some information to pass on about this issue. I am kind of disappointed in the brake I think it should work better than it does. If you need information on the brake I can PM you the makers name. I am not wanting to give the maker a bad rep over my limited experience to this point. I did call and speak with the maker but they were not really able to provide any information about why this is happening. I am hopping my the issue can be fixed by making my brake identical to my brothers. I just wanted to see if anyone else has had a similar experience and what they did to resolve the issue. If I have left out a needed piece of information about the guns make up please let me know and I will up date my post.