Your Leupold should have great eye relief, When installing my scopes I turn it up on max power set and level the scope, with the bore and you should be fine. Muzzle Brakes work, but they are very hard on your ears. I can open and shut my brake on my rifle, for hunting i keep it closed.I never wear hearing protection when hunting and you don't want to shoot one with the brake open without plugging your ears.