So I recently procured a NEF 10ga that I had cut down to NFA legal (18.625", aka "Thumper"). Obviously this has no choke and is full cylinder bore. I would LOVE to find a mold to cast some good hard round ball slugs with and produce some definitive kinetic energy.
I've done a little research but most of what I find are dead end threads. Has anyone made a mold for these scatterguns?