I'm torn between a CZ Bobwhite G2 12 or 28. (I have an O/U CZ Canvasback in 20 so no reason for the happy middle ground). The 12 would be great for ducks and it can use my Mobil chokes from the SBE.... But the 28 at 5.5 lbs seems like such a sweet little gun that I assume I would enjoy? One question is, could I buy 28 gauge steel shells and swap out the shot with bismuth or TSS etc in = or lighter loads? I'm sure some filler would be needed to take up the excess space. Anyone done something like this? I'm thinking the 28 might be good on ducks with some of the premium shot?