In the new issue of Gun World magazine, Duane Thomas put a XS big dot on the front and a Novak half ghost ring rear on his Glock 17. This set up (according to Duane) offers incredible speed AND long range accuracy. He backs it up with an incredible score at a recent Washington State IDPA Championship event, with an almost perfect score on a stage with targets out to 30 and 35 yards. This might be the answer to those that struggle with windage problems at longer ranges with the factory XS Big Dot with the shallow V-Notch rear. Put the big dot in the big half ring and you have good windage control with easy sight aquisition.