I will repeat what I have said in many threads, here and other forums; the .410 is not a beginner's shotgun, except to introduce the shotgun to kids, shooting at static targets. Think clay pigeons on a berm at 10-15 yards. Other than that, it is an expert's gun for small game at any but very close range. If one grows up shooting it a lot, it makes a good dove, quail, and woodcock gun. It makes Skeet or Sporting Clays a real challenge. Not the best choice for Trap or ducks. 3" .410 is good for close in HD, I consider 2 1/2" iffy, despite the fact I own a SxS derringer in 2 1/2" .410 & .45 LC. It is my 'get off me' at the door gun.
My son has my old .410 H&R, he keeps it for a 'bumping around the woods' gun.
Yes a 410 is an experts gun especially if you started out with a 12 or 20 gauge. For all of us that grew up with a 410 as our only shotgun, we learned really quick to make all of our shots count. I would not discount a person with a 410 that shoots well with it. I have used my 410s to take a lot of different game over the years. The exception is that I never tried to use a 410 for any type of water fowl or deer hunting. I have taken turkeys with my 410s and 410 slugs work well to knock a treed raccoon down.
From the looks of it the .410 might make a very good home defense weapon.
From my personal testing of 3" 410 self defense loads using both my Mossberg Shockwave with a 14" cylinder bore barrel and my Mossberg 500 with a 18.5" cylinder bore barrel, the 5 pellet 000 buckshot shells do the best. Both guns will keep all 5 pellets within an 8 inch circle out to 15 yards and still keep the majority of the pellets in the same size circle at 25 yards. And I still get good penetration at 25 yards.