So besides a powderless loads, which I assume are accidental, what loads do people try to make - on purpose. [RHETORICAL QUESTION: DON'T POST REAL LOADS]
The lightest I've ever loaded is the standard 3grs of Bullseye over 148gr wadcutter - .38spl. People try to go lighter? For anything lighter, I've gone to the Speer plastic bullets. Nothing in-between.