I know that the larger the grain of BP the slower it burns. However, most shooters with smaller cartridges always talk about wanting to get as much powder behind the boolit as possible. With smaller grain powder, there must be less air space between the grains. Shouldn’t that enable you to get more powder in the same case and more power?
Dose the slower burning powder accelerate slower giving a better outcome like with smokeless? Do you need the air space between the grains? I’m just wondering and would like to understand more about how BP works.
Thanks