I am considering rebarreling my Rem Sendero 300RUM in the future. I will likely go with a longer 30" heavy barrel. I am also considering a muzzle brake such as hollands QD brake. do muzzle brakes effect accuracy (make worse)?
When I put one on my 300WM Sendero, my groups tightened up a bit. I'm not sure if it actually changed the dynamics of my barrel harmonics or if I'm just shooting better now that the recoil is the same as my 15 pound 308.