I shoot a Pedersoli Trapdoor Long Range Rifle .45-70. I'm needing sample range figures 100-1000yds. My load is 535gr Postell's, 48.5grs of Hodgdon 777, a pea size wax wad, Winchester Brass, and CCI LR primers. So far I'm hitting the 10" gong at 100 and 200 yards pretty easy but it's been a chore figuring out the "points" on the creedmoor sight. Any help?