I want to get into long range shooting and I am currently looking into a Leupold Mk 4 10x. I was considering a variable scope but I do not like the "free floating" adjustment for magnification. Are there any scopes that have detents at each magnification in between? If there are, how consistent would it be? My ultimate goal is to get into 1000 yard shooting, is the mark 4 good for it or should I be looking at something else?