Marine,
I too have strated to think about getting me a 21 to use for clays and waterfowl. I usually shoot 30" bbls, but have been thinking about a 32" Duck. I have never handled bbls that long, but I am very tall and confident that I could handle them. I need to find one and see how it handles. I would need it restocked as well to fit my longer LOP. CSMC has some nice ones to choose from and I might give them a call. I had them make me a Fox last year and they did an extraordinary job. I would like a Galazan 21, but spent most of my available funds on the Fox, so I may get an original 21.
Make a trip to CSMC, you will love it!