About ten years ago I reviewed a Merkel 2116 SxS with 20 and 16 gauge barrels. Both barrels were marked Improved Cylinder and Modified. The 16's bore was .007" overbore (.677 instead of the nominal .670") and the chokes measured .008" and .018" constriction.

That's it for a sample of one.

Bruce

Last edited by The Technoid; 09/04/16 06:48 PM.