Old time gimmick to make a makeshift slug. I would not do it in any of my shotguns because the case was not meant to go through the choke and all of my guns are choked. Buy slugs and forget this ringing funny business.
Good intentions will always be pleaded for any assumption of power. The Constitution was made to guard the people against the dangers of good intentions. There are men in all ages who mean to govern will, but they mean to govern. They promise to be good masters, but they mean to be masters.