My first shotgun was a mossberg 500 3 inch.I used the xtra full choke that came with it. It was OK...atleast by my standards at the time..meaning I DID kill a few birds with it. Killed quite a few more when I went to an HS Undertaker tube and a red dot sight...big improvement over the double beads (unadjustable.) Current gun is a 870 supermag with a Carlson's tube and TriViz fiber optics./ best combo yet for me. If you can put over 100 pellets in a 10 inch circle at 40 yards, you have a winner.