Rigby--Yes that bore of rifled barrel can be put on, as well
as a .729 rifled or any smooth barrel. I put on a smooth
just because it was first to get here, and I tested loads with
it. Hell action would handle 20ga, 16ga, even 10ga.

Marrakai--Yes if you find Savage thay are the ones. You
can put any NE case or shotgun case up to 10ga.Ed