Mike,
As a matter of fact, Darne company can make a little shotgun in 28 gauge for you!!!
For more information about it, please have a look at the Darne company website :
www.fusildarne.com and please contact Geoffroy GOURNET, who import Darne shotguns and rifles in North America :
Geoffroy Gournet - Master Engraver
Postal address: 820 Paxinosa Ave, Easton PA 18042
Tel: 610-559-0710
Email: ggournet@yahoo.com
If you want more informations, please contact me at : Sebjeanhgirard@aol.com
Best regards,
Sebastien
www.gournetusa.com