Good article. I keep one Mossberg with a 28" barrel for bird hunting, and one with a 24" slug barrel for game hunting. I've never used the slug-barreled shotgun for hunting, but picked it up years ago and kept it just in case. My other shotguns are strictly for self-defense.
In my area, buckshot has been impossible to find since spring, and now all the target loads have disappeared. I kept a decent amount of buckshot and slugs at home, but never stocked up on birdshot because I honestly never thought the supply would dry up. I've been able to get a few boxes of assorted sizes of steel shot over the past few months, but that is all the birdshot that I have. I've got just enough steel #6 for a couple of dove hunts but will probably hold off on any hunting until ammo starts showing up on shelves again.