Thank you Dewey for an insightful look at American double design.

Simplifying design, increasing robustness, while retaining the essentials of handling and ergonomics were never priorities of SXS designers and makers.

There are few SXS equivalents of the OU Brescia action, something simple and robust powered by coil springs. The Chapuis, Fabarm Classis, are two that come to mind, but they are discounted because they are not sidelock or boxlock.

And we still have ribs on doubles! Masochism seems to be involved in there somewhere.