Dennis,
Most of Darrel's scopes are set up to use both the ART reticle and turrets. You use the reticle out to whereve you feel comfortable and then start twirling. It's not an either/or system. That's why he puts them in (among others) Leupold Mark 4's and Nightforces. And at any range you want to use a reticle, it's much more flexible than any factory reticle I've seen, plus there's the factor of being in the FFP.
