Thanks to all, I just didn't know what to expect with those readings after seeing what some one had posted that .005 was considered modified from the same article that Samuel posted about what O'Conner wrote.

Full Choke, .410, .396, .014, 70 percent of shot in a 25 circle at 30 yards.
Modified, .410, .405, .005, 60
Imp. Cyl., .410, .408, .002, 50
Cylinder, .410, .410, None, 40

This is what I copied that someone had posted on another site.

I will have to see how they pattern myself. Have plenty of choices for 2 1/2".


David