Please help on a couple of things......I am going with a 4.5x14x40 Leupold VX-3 scope for my rifle. This will be used for target shooting and coyote hunting, my question is.......should I go with an Adjustable Objective on this scope or no ? I will be possibly shooting out to 400-500 yards. Also, this is being mounted on a Remington model 700 Sendero , which has a heavy barrel. I want the scope as close to the barrel as possible.......I need to know what Leupold rings to go with. Will low rings work, or will I have to go with medium rings ? Thanks guys.