I went without a sight(front or back) on my bargain basement New Haven 12 ga. pump with sawed off 18" barrel for many years. And I've tested many reload combos to see if there was a way to increase spread. Even with that "open" choke, not significant improvement. I'm in the camp(probably by myself) that would pick a shotgun in a house only after using all the ammo in the 10-15 handguns available. IF I happen to go outside with a little more room to maneuver, then I'll grab the 12 ga. I much prefer one hand free in a house. And I'm much more competent with a handgun.
But to the OP point of contention, I do remember an assistant Chief of Police relating the story of how he purposely racked a round so as a troubled young man could hear inside. And when he went inside with a partner, the troublemaker had dropped his weapon and sat down at a kitchen table. Guess that has happened a few times. But I'm not gonna havta worry about rackin' since I keep one in the chamber of all my defensive firearms.