Nice gun, I'd probably pick up a mod and IC tube for it (along with some choke tube moly lube, regular grease doesn't always prevent galling), then find some big sheets of cardboard and pattern them at 35 yards so you know what they can do. Some guys change chokes after every station in competition. I might swap out the tube in my 870 once or twice in a course, but like I said, I usually just leave in the IC tube for sporting clays. Most guys use an o/u with mod/IC or IC/skeet depending on the course.