I bought a BTR-2 in FFP in their first release. Couldn't be more pleased, especially considering the price point compaired to other scopes out there in the same magnification class. Optical quality is great. I use ofset mount irons for 0-20 yards, 1x through the tube for 0-80 or so, and magnify past that. As mentioned previously, head position is important with any scope. Dry fire practice and forcing yourself into getting in and out of unconventional position (such as practicing with a barricade prop for low squat and lower, or rifle in canted position) makes good habits. My personal experience is that many, but not all shooters, who have issues with appearant tube diameter/exit pupil/head alignment, don't really practice enough. If they do, they practice in conventional and comfortable positions. Do the homework, meaning live fire and dry practice outside of prone and the bench, and this scope is appropriate for any level shooter.
Stand your ground.
divelong