Long Distant Shooting 900 yard hits with a 260 pistol

Rayners Range in Ohio. We shoot plate matches with the rifle guys from 200 to 900 yards. No special rests, just a bipod and a wooden wedge and a Burris 3-12 ballistic plex pistol scope. It's an XP-100 in 260 remington using the Variable Gantry Mount from Miracle Machine Works that is absolutely the best for allowing us to make multiple sight changes for all the distances we shoot at the match. If you look really close on the first shot at the 15“ orange circle you can see the bullet trace coming in. Hope y