Sorry, the original C8 original FSB was .625" I have one in my collection. They may have switched latter, but the first issue C8 barrels were defiantly .625". Can post pics of required.
I would most definitely be interested. All the ones I've ever seen/handled in the CF are/were .750" and most were of 85,86 vintage. There was a barrel that just sold on the EE that is also .750". The barrel is a lightweight profile but with .750" FSB.




















































