>>64132653 (OP)
>What's the consensus on shotguns?
They're a specialist tool for shooting small fast-moving targets at close range; think birds, squirrels, and things that pretend to be birds and squirrels, like clays.
>Is there any point when you can have 30 round rifles?
For a proper fighting weapon? Lolno. For clay sports, hunting, or defense on a budget they're great. And while they might not be the optimal min-maxed defensive weapon, they're plenty good enough.