Interesting. I tried 49.5 TAC with 180 NBTs which was good for 2730 fps. I'm giving up chasing velocity. I'm backing down to 49 which gives me 2700 fps. I'm staying with 52 grains of MR2000 for 200 Ballistic Tips/Accubonds. Those loads shoot well and with Litz's BC testing should stay above 1800 fps out to 450 yards.
I'm going to customize the my CDS dial to the 180s at 2700 fps. Even with the 200s it will be within 2 inches at 400 yards.
