A 28ga shell with do the same in a 16ga as a 20ga in 12ga. I have 16 & 12ga shotguns. I tried for years to keep only green Remington or purple Federal shells for the 16ga and red Winchester or Federal red shells for the 12s. I was given several shotguns and ammo and that plan is not valid now.

The Karma bus always has an empty seat when it comes around.- High Brass

There's battle lines being drawn
Nobody's right if everybody's wrong