Reversed chokes : Why?

[Mills]

My letter says full/full and that is what they are, but the fuller full is the right barrel.

I guess it could have been modified, but it still begs the question why would someone deliberately put the barrels in that configuration.

I have noticed a few other vintage guns in that configuration, so it seems there were a minority of people who liked the configuration for some reason.

[Bill Murphy]

Parker Brothers allegedly pattern tested guns to a specific number of pellets in the target. It is assumed that each barrel may have required a different amount of constriction to reach the required pattern.