Yes the Nova & SuperNova use the standard "Beretta/Benelli" tubes. The "Crio" tubes & barrels are not put in the Nova, they are put in the more expensive guns.
Carlson has ALOT of tubes that could be used for turkeys including a new one built specifically for the Win Longbeard ammo.
http://www.choketube.com/choke-tube-...oke-Tubes&mf=3
Out of curiosity I see they have a .640 tube for card shooters!

Hmmmm I might hafta order one of those for my Montefeltro and try some 2.75" 1.25-1.5oz lead loads just for fartsNgiggles!