Shot at 20 yards. Just standard Winchester superx #6.
Improved cylinder seemed pretty useless to me. But i don't know that I've ever shot anything IC other than slugs.
Modified was a little better.

Full was usable at 20 yards for squirrel anyway.
I've got a few days of ohio squirrel season left. I'll see if I can get out and get one with it at least.
- jake