All, thanks to those who provided constructive feedback. Apologies for the delay, I was offline a few days dealing with an unexpected death in the family.

I appreciate the offers on other 21s but none are quite the configuration Im looking for. Like Stan said, my heart is set on 30 barrels. I did locate a 3 F/F gun but I need something a little more versatile choke-wise. I feel it would only be a matter of time before Id want them opened. I will brush up on the patent and get a copy of Schwings book.

Some really nice 21s posted! Looking forward to wasting my money on one.