I'll usually close out my shooting day with a magazine at 100yds. Freehand I'm at like 40% hit, resting on a table or something like 70%ish. Trigger control becomes very important at that. For my rig, 100yd hold over is put the dot right on the neck of the silhouette.
That guy made some pretty nice shots under pressure. I read that he rested it on a trash can for the initial shots. Good use of bracing, and concealment.