I have not read that Newguy. The S&W .500 that I shot was not Magnaported, but it had some type of muzzle break installed! I wish I had looked at it more closely. I'm not sure if it was a screw in type, or not. It had 3 slotted holes on the top, at the muzzle! It did a great job of taming the recoil! I've heard that the .500 was very unpleasant to shoot, but with this muzzle brake, it was not much more than a .44! As I said, Magnaporting states that they will reduce recoil about 20% for about 115.00$. I'm really wondering if there is some other type of muzzle brake I could install for the comparable amount of money, that would reduce recoil even more?