Wildwings, I have to question how many geese you have ever shot. I have killed a lot of them.
"it is no problem to shoot geese with a sub gauge shotgun if you
use a premium shotgun shell like Hevishot......you can expect
very good results even on a larger bird".
The above quote from you is nonsense. A 28 gauge for geese is a ridiculous idea to even think about. I don't care it you are using shot made from spent nuclear fuel. No person who calls them self a sportsman could possibly entertain hunting geese with a .28 gauge shotgun.