I’ve worked loads using 123gr Nosler BT and compared them with factory loads from WPA, Hornady, Prvi, etc.
All data out of a 16” Radical Firearms AR. 1,080’ above sea level, 83 degrees.
123gr Nosler BT, 2.200”, 25.5gr AA1680 gave 2,280 FPS
26.0gr AA1680 gave 2,310 FPS
26.5gr AA1680 gave 2,348...