I have a couple BDC scopes, one an old Bushnell 4-12x. While I'm not into long range target shoots, I do occasionally like to take a pop at something 3-400 maybe even 500yds away & I like the practice of guessing distance dialing in yardage & trying the shot. The scope may not be calibrated to the 1/10 of a degree at that distance & that's fine, you rarely have a solid enough shooting platform, but I have made some surprising accurate shots with a 250S using the BDC feature. I had one on my moose rifle but never, ever used the feature while hunting, I would never shoot at a moose that was further than I could guess the hold-over, & my max hold-over would have been level moose's back which would translate to about 350yds if my memory is correct, so in that case the BDC is not neccessary.