Just acquired the 4-16x50 variant,
I had a play with the programme download from the Hawke website for my set up, and with mag at 9.5 and a 40 yard zero gave me 17-31 yard off the top dot, 40 yard zero 45 yard on the 1st dot below 50 on the 2nd 55 on the 3rd, 60 on the thick post, almost as Ideal for HFT set up IMO as you can get, I set it up packed the back of the scope to get zero without loosing optical center, and quite to my surprise each and every one of the predicted points of impact coincided with the actual results, fantabulous (fantastic-fabulous) . A very bright clear picture through the fully multi coated lenses, though made in China definitely worth a look if your in the market for a similar spec ed scope