I've read over the years that the Superposed (and other brands) trigger is an inertia system and can be "converted" to a mechanical system for use when shooting sub-gauge tubes. However, the "conversion" involves replacing a spring in the trigger system with a weaker one so the gun will reset with less recoil and is not a real conversion to mechanical.

I have a 12 gauge that has a set of Supertubes. These sub-gauge tubes were fitted to a specific gun by Browning and the trigger was "converted." My gun (unloaded) will fire both barrels with two pulls of the trigger and absolutely no bump to simulate recoil. Just like a mechanical trigger.

How is this possible? Surely the inertia block needs some type of jolt, no matter how light, to set the second barrel.

Last edited by Dave Schiller; 07/11/20 03:53 PM.