WTB: Beretta 28 and 410 Barrels from Skeet Set

I'm looking for 28 and 410 gauge barrels from a 680 series Beretta skeet set to fill out my present set. The ideal find would be 27-28 inch skeet/skeet in good condition at a price I can afford. (Not interested in a 30 inch)
I now have a have a 680 skeet with 12 and 20 gauge barrels. Please send PM if you have anything. Jim