Single or double trigger?

[desmobob]

O/U shotguns were developed later than SxS guns, so I believe the single trigger was a "modern" feature. I don't know about the doubling issue. I own a double trigger SxS and three single trigger O/Us and have never had one double.

I recently watched an interesting YouTube video from The Gun Shop comparing SxS and O/U shotguns. It might have the answers to your questions.