Not a site but try to get your hands on the full volumes of the Varmint Hunter magazine. No longer publishing as of 2016 but they were putting out 4 magazines a year since 1993(4). The magazine was the holy grail to accurate guns and how to build them as the DGJ is to us sxs shooters. They had an honor role of shooters in the 500yd, 1000yrd, 1500yrd and 2000yrd club who had shot some type of varmint at that range (usually gophers or prairie dogs). And many, many articles on ballistics, the guns, building them, etc.
I have every issue except volume 1 and I have learned more from the articles than I could have reading any other published magazine.
