Ladder test on R15 from 44.0-45.2 gr gave a node at 44.7, so this approach helped to limit the testing range. Running a comparison of Varget vs R15 in Quickload, the calculated velocities are faster for R15 at the same pressure. Interestingly the barrel time correlates perfectly with pressure, NOT velocity. Next will work on seating depth, which will factor into Quickload pressure and velocity.