Two more things to add:
Try shooting a laser-sighted shotgun vs. a guy with a pump, but no light and no laser, but who knows how to shoot a shotgun.
Given that people routinely hit fast-flying birds in low light, from a low carry position, in a split second, I think it's obvious that shotgun shooting doesn't require a laser or anything else but proper practice. Of course,
I would
never shoot doves a few minutes after legal shooting hours
, but it's been done before.
Finally, WRT your strategy, grumpy1, IMO you've got it backwards. You've got dogs, noise makers on the doors, good locks. That means that a lone, casual or unarmed intruder won't be in your house.
If you ever actually have to defend yourself, you will most likely be facing multiple, armed, committed home invaders -- simply because a lone and/or unarmed burglar will be deterred by everything else you have in place.
That means two things:
1. Any shots you fire will be under extreme stress -- in armed combat. If you think you can reload quickly under stress (and it sounds like you don't even have an ejector on your gun), you should try it some time. Bet someone you dislike $100 that you can blast three watermelons in under 3 seconds with your gun. Make sure you have lots of spectators. When you fail, think about the fact that, if you're facing armed home invaders, your stress level will be 10 times what you feel when you lose your 100 bucks. Then consider that, with a pump gun, someone with rudimetary shotgunning skills could easily make those shots and be ready for the next one, even if they missed a watermelon and had to shoot it again.
2. You can count on someone shooting at you. And they won't have single shots. You may have to take a "hail mary" shot or two from cover. Wouldn't you prefer to have 5-7 more where that came from, when you hit drywall instead of home invader? Facing two armed criminals, armed with a single shot, you can expect to take a bullet if the shooting does start. The idea isn't to be "poetry in motion" with duct tape and a laser pointer, and to win some sort of perverse game; it's to stop the attack and come away uninjured if possible.
Seriously, have you ever shot flurries? Try that sometime. It's amazing how fast you CAN'T load a break-action, even with ejectors, when the pressure is on, and flurries are just fooling around, not life-and-death.
I love break-actions. I seldom shoot anything else. However, they have their limitations, especially the single-barrel variety. And the first cartridge shotguns in general use were doubles, not singles, soon to be joined by lever-actions, then pumps, all in the late 19th Century, and semiautos in the early 20th. Sure, there were single-barrel flintlock blunderbusses, but after they became obsolete, the single barrel shotgun was
never the gun chosen for defensive applications.
That doesn't mean I'd want to be shot with a single. It does, however, mean that I'd much prefer facing a would-be attacker who has a single than someone with a magazine full of shells.
Use whatever you have, and whatever you want. But don't talk yourself into something that doesn't serve your well-being, just for the hell of it.