RE: Nikon Pro Staff BDC
Haven't tried the Nikon, but did try the BDC on a $40 Tasco 3x9about 18 yrs ago on a Rem Mohawk 600 .243 win. I will honestly tell you, it's been on that rifle ever since. I will also say, it's the only one I haven't touched in that time.
I set it at 100 and moved to 350 just to see if it worked.PERFECT! The other side I have not touched it since then. Can't say about the Nikon, but the Tasco did it.