As Twicebarreled said, only try to find a Brit or similar 2 5/8" gun. They often have dynamics similar to 12 bore heavy game/light phesant guns: 7 - 7 1/2#, 4 1/2 - 5" balance to trigger, 1.7 - 2 unmounted swing effort, and 7 1/2 - 9 mounted swing effort.

DDA