I’m baffled now? This is copied and pasted it is the only reference to this barrel any where online I will also include the link
The Contender would also fire .410 bore shotgun shells, either through the .45 Colt barrel or through a special 21-inch (530 mm) smoothbore shotgun barrel. A ported, rifled, .44 Magnum barrel was also made available with a removable choke, for use with shot shell cartridges to unspin the shot from the barrel rifling, or, by removing the choke, for use with standard .44 Magnum cartridges. The degree of flexibility provided by the Contender design was unique for experimenting with new cartridges, barrel lengths, and shot shells.
http://en.wikipedia.org/wiki/Thompson_Center_ArmsSo should it not shoot 44s with out spliting the cases?
