It had occurred to me that certain gun store people speak poison with two tongues. I definitely got a little spooked, probably by the dramatic conviction of said people against chokes other than cylinder, i.e.: essentially no choke at all. Maybe they were just regurgitating what others (who actually know what they are talking about) had said, referring to the hard cast stuff, and don't understand themselves the difference between lead vs. steal... Or maybe it's all just a big misunderstanding on my part. Anyhoo, thanks a bunch for your input.
Lucille appears to be fine and undamaged (back when I was worried, I wasn't sure if possible damage could be some kind of unnoticeable, structural weakening/ slight deformation that would compromise my TRUBALL® shot, or what).
On a happier note, though, where the Sam Hill do I find original, Benelli (Internal) Cylinder chokes for these two. Should I call BenelliUSA tomorrow or will they just tell me to call Brownells, etc?