My Merkel 280EL 28ga. came with .008 /.018 and I have never felt the need to alter the chokes shooting 3/4 .oz for sporting clays or hunting. After patterning the gun after it's purchase at the appropriate distances, I felt I would leave well enough alone.
If you forget about the gauge and let the gun do it's job, you'll be surprized at what it can do within reason of course.
Karl

Last edited by Karl Graebner; 09/14/16 09:53 AM.