Originally Posted by nhcrowshooter
I have what is an unusual choke marking (to me) on the right barrel of my Miroku 500E with Bermingham proof marks. As I noted above a brass choke gauge showed IC and Full and it's 40 yard patterns were 46% right and 84% left. As you can see in the attached picture the left barrel is stamped FC but the right barrel is stamp with three roman numeral I's. Has anybody seen this before? What does it mean, Cylinder, Skeet or IC?

[Linked Image from i.ibb.co]

Improved Modified. That's an IM.


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