Very nice. Is there any way you can measure the bores. I am trying to make up some choke gages for a friend who collects big bore shotguns and we are having problems finding out the bore size. Some say 1.052 and others .935.

We are getting the feeling that some of these old 4 bores were not made to a standard.

The hull rim measures 1.183, the base is 1.064.

Thanks, David

David