Wow! I'm sure late getting the long range bug. I had a number of elk in the 500-700 yard range this year, but I was carrying my 375 ruger alaskan, a rifle that I really love but at 500 yards your talking roughly 50 inches of kentucky hold over so they walked. It was really hot and dry during the elk season this year and by the time they poked their heads out of the timber there wasn't much time to get on them. The day after the season closed it started to get cold and has been snowing ever since. Anyway it sure is awsome having this kind of resource to help figure it all out. I found a savage 111 in 300 ultra the other day for a base gun to start with and now the fun begins.