I installed the cast off spacer on the gun and checked it on the pattern board yesterday. The full choke tube at 20 yards is dead on point of aim. The IC choke at 35 yards was centered and pretty even. Then I shot a round of skeet with light target loads. No issues there. Today I purchased a Carlson's turkey choke. I like #6 plated lead shot so I got the 0.660 constriction.
Next session will be checking patterns and loads on turkey head targets.