I bought the Nikon P223 3x9x40 as a primary optic for my do it all AR to see if I would like the BDC type reticle and having never owned a Nikon I wanted to try one out. I used it this past winter coyote hunting with no complaints but I never got to use the BDC. I took it out today to do some ladder tests with two different bullets. I was shooting 100 to 400yds and the BDC set-up was spot on. The glass was clearer at 400 on 9x than my Bushnell 3200 elite 10x which is my favorite scope. I am no expert on glass but have used quite a variation of scopes and this is a good one.