Upinmichigan,
I'm certainly not one of the "cognoscenti" on this board, but.....
Last year, just before the spike in ammuntion prices I scored on a couple flats of Gamebore Pure Gold 12 ga. 2.5". My plans were to shoot them in a 6# Webley with 2.5 chambers. Alas, they are just too hot for a light gun. I started shooting them in my 3" SKB this fall. They are quite pleasant in an 8# gun and abosolutely deadly on pheasants and praire grouse! I've read that shorter than chamber length ammuntion can pattern poorly, but it hasn't been my experience.
Steve