Max,
Issue is not bore size, but rather the size of the chokerifling itself. My bore size is close to .740, but the groove diameter of my chokerifling is .733 so I use a .735 very soft lead fosbery head.
The Dixie slug sounds as if it is relatively hard so you risk a ring bulge by trying to force it into a tight choke rifle. But, if the head is only .732 it may not risk a ring bulge, depending on your rifling diameter, it may just fail to take the rifling at all, risking accuracy.
Be good if anyone who has used these slugs in an old Paradox can give us a report based on facts rather than just speculation such as I've produced above.
Best of the Season and in the New Year, Tim
