I have recently acquired a Cape gun with what I believe is an unusual caliber on the rifle side. The shotgun side barrel is stamped 16.0 choke and the rifle side is stamped 6.76. I used a micrometer at the business end on the rifle barrel and I get 6.7mm. The shotgun measures 15.8mm. My question is, can I get ammunition for this rifle/ shotgun? And any history on the item would be interesting as well. Detailed pictures can be seen here: http://hutch2.tonidoid.com/app/websharepro/share/capegun/

Regards, Hutch