BJHabermehl
40 Cal
One thought, talk to a expierenced gun builder and have another Colerain barrel installed. Keep your choked barrel for shot, swap it out for round ball. BJHThat would be tuff to do either. The muzzle measures .573
No round balls says the barrel manufacture. I’ll have to stick with shot.
I’ll probably make some paper shot cups out of craft paper. The buffer between the powder and shot is the experiment.