Wasn't trying to be dense - first part of the question was preamble, to qualify what I'm after.
I've got the Modified, and I've got the cylinder, and have yet to set up extensive tests of this and that ammo.
I did the searches on Benelli/Modified/etc.; but it doesn't go to the heart of it.
I gather slugs can work through anything and everything needs to be tested gun by gun. . .
What I couldn't find, if it exists, is some "The military tried Cylinder and Modified, took Modified because X and Y with ammo Z in ambush situations" etc.
Also interested in any insight, like 'Modified improves 00 but causes flyers', or 'modified was found to work *better* with this type of slug across all guns'.
Interested in any insights or generalities discovered along the way that may influence what I should try to leave on the gun. It's also general interest, given that I have to examine my own role (or recreational use cases).