Extrapolating from a single data source is not good science. Attempting to simulate the .32-20 cartridge when breech-seated, I entered a value of “zero” for the seating depth and continued.
The Lyman dropdown menu lists the 323471 bullet which I used this past year. Using 9.0 and 9.5 grains of Accurate Arms #9 in the calculations, the resulting trajectory data closely approximates the data from match shooting.
My question is; “Has anyone else done this using QuickLoad? Specifically, using “zero” for seating depth as an approximation of breech-seating."
Farm boy from Illinois, living in the magical Pacific Northwest