Saw the video on long range hunting called Beyond Belief and was wondering where you can get those custom bullet drop compensators like they have on the video. I have a Leupold Mark V 4.5x14x50 and was wondering if you can get them for that scope. I know all the ballistics and ranges of my 300 WM out to 800 yds. I see on Leupolds website they have them but not for the scope I have. Anyone have a custom one like on the video? Thanks!