I don't doubt they work flawlessly, they've all tracked great when I tinkered with them. Another issue is I had one rifle that really liked factory ammo, and Hornady discontinued it. Only rifle I've had that shot Superformance well, and they dropped it (280 Rem). When I work up a load for my 7 Mag I may send in for it. Only other rifle I have CDS on is a 6mm Rem Model Seven, and being a 2-8x33 don't even know why they would put a CDS on it.