Have to try it all and let the gun show you what it likes. 2-f Goex works great in my 20 gauge trade gun or the 12 gauge double barrel. Some of my 54 caliber rifles prefer 2-f and others prefer 3-F.
I have a friend who loads 3-f in everything. Even his Pedersoli 12 gauge double shoots it well. I havent tried 1-f in anything, just very satisifed with the results from 2 or 3-f Goex.