First off I want to say this is one of the best sites I've been around. I mainly do a lot of looking with this being my first post. Tons of great info on here! I am looking at my first custom rifle chambered in 7mm mag. My question is on a 26 inch heavy barrel would a muzzle break have any degradation in respect to muzzle velocity and accuracy out past the 500 mark? I understand the reduction of recoil would help but what are the downsides to a break? Thanks in advance and please if this is a newbie type question humor me! I've searched on here a few times and just thought I'd ask straight out!