I put one together and actually got to shoot it at 600 yards at butner, here is the data book page
first 6 shots were to get it into ten ring, interesting enough about the scope is that i the cross hairs completely cover and eliminate a 3" spotter at 600 yards, due to the width of cross hairs being one minute in width
2.5 magnification is doable but shooter needs to keep to the basics, at 600 yards the bull (normal bull at 600) is quite clear, not big, but clear when setting yours up remember that the focus at 100 is going to change quite a bit when you look at 600
am happy with results so far, and i was shooting 175 grain match king