The only way your smooth bore double will handle the Dixie Tusker or DGS "Last Resort" would be with CYLINDER BORE choke tubes and then only if the bores will allow a slip fit. These are hard cast, heat treated full bore slugs, don't make the mistake of firing one through a constriction choke tube of any kind!
On the other hand, the Dixie Tri-Ball buckshot round has three .60 caliber hard cast "pellets" and pattern best from full to extra full chokes.
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