It's not the same but I've ran the 2 3/4 1 ounce bulk load is my Mossberg 935 Waterfowl Magnum and they run just fine in the bigger gun that use to say it was only built for 3 and 3 1/2 inch loads of 1 ounce and more.
There's a company called Or3gun that makes a spacer for light loads if needed.
http://or3gun.com/OR3GUN/about_or3gun_marine.htm