As well as the scenarios that are in the rulebook and supplements, it’s always fun to have a few more.
These were developed by Phil, Kathie, Sue and myself during our games :-

Crossing the Rio Grande
Barn Raising
Defend the Homestead
It’s Mine
Jail Break Round-up
Night Raid
Railroad Hold-up
Rescue the Captive
Rescue the Hanging Man
The Bridge

Feel free to pop onto the SAD forum and post any comments / queries about them.