Amen, Sam. The triples I've seen have oft been "Scotch" ones, where two have been hit with one shot.
Per Brister, Rudy Etchen took 5 for 5 on a covey rise in some quail shooting championship. I would have liked to have seen that.
Bet the greater gape on the SxS aids rapid reloading.
Thanks, Twix. Glad to help...