Analyzing Precision: Calculating the Figure of Merit

The Figure of Merit is vastly superior to the group size as a gauge of shooting precision, that is, as a test of the rifle and ammunition. Its most valuable use is to determine the best load for a given piece.

My blog post with a more detailed discussion of the Figure of Merit:
https://historicalshooting.blogspot.com/2021/01/calculating-figure-of-merit.html

My blog post showing how to use the FoM to determine the best load for a given piece:
https://historicalshooting.blogspot.com/2023/01/working-up-load.html

The British Muzzleloaders FoM video:
https://www.youtube.com/watch?v=zAntq2M0o30

The British Muzzleloaders spreadsheet:
https://www.tapatalk.com/groups/britishmilitariaforums/victorian-accuracy-measuring-figure-of-merit-calcu-t18600.html