I am the proud owner of at least 10 of them and dollar for dollar you can't beat them..period.. I've never as much as had one single problem with any of them.. they are bright, clear and I've never had one move a single in of impact on their own..I mounted a 3x9 Ultimate Slam on my bone collector and have around 100 shots on it.. it still hits exactly where it's supposed to and the dots are absolutely perfect... the nikon is a great scope also BUT the semicirculars are all the same size and when your shooting far the circles darn near covers the whole deer.. the stagered of the Leupold dot make precise aiming alot easier in my opinion.. I just wonder if all these problem listed above are precieved or actual.. there's alot of things that can change impact points, stock, dirty barrel, loose mount and rings, improper cleaning techniques etc... but bad mouthing a scope company is easy, I'd but another one in a second without hesitation... the Ultimate Slam 3x9 is perfect for any slug gun or muzzloader, buy it and you'll never regret it...