Neither of mine took hundreds of rounds to "break in" but they did work better after a few boxes of ammo. I don't know about you, but I can have lots of fun spending $35 on 100 rounds of 12 guage ammo! Shoot some thrown clays or some pumpkins or whatever you want.
When a coyote is creeping around your barn or chicken coop, or a wolf is in your front yard, buckshot is just fine. When you have to take out a bear around buildings or possibility of overshooting your target, buckshot is also ideal. I killed a yote a couple of years ago that was eyeballing some newborn lambs with a .22 short from an old Winchester pump action rifle, it was a headshot but at that range buckshot would have been just fine. Lots of guy that call coyotes will use a shotgun for close encounters, they even have a shotgun load called "Dead Coyote" which I think is something like 4 buck. I saw it on TV!
I almost forgot to mention- these shotguns are great for collecting grouse for dinner when out on a deer or moose hunt, like many BC hunters do. You can hop out of the truck, pop in a magazine and slay a few chickens for a tasty meal on your way back to camp.
I don't think anything is going to be more reliable than a good tube fed pump or semi shotgun, but these shotguns do have their place, in my opinion.