The N.O. Police did go door to door after Katrina. Read Gordon Hutchunson's book "The Great New Orleans Gun Grab-Descent Into Anarchy". Not only the NOPD, but also the LA State Police, and St. Tammany and St. Bernard sheriff's office were confiscating guns. Granted that Katrina was a real...
I have an 870 18" barrel with cylinder bore too. Never knew that about the full choke. I'll have to pattern mine with buckshot and see how it does. Thanks for the info.
I have a CW40. The only problem I ever had was when I assembled it wrong and it turned into a single shot. You have to be very careful when re-installing the slide lock to orient it correctly with the spring. Follow the owner's manual and Youtube videos and you'll be fine.