You don't "Sight In" a Damn' Shotgun....You PATTERN IT. If it throughs a good pattern with whatever but shoots high/low..left/right...You adjust the Drop or warp the Barrel. And optical sights on a Shotgun....God only mean't those for Deer Slug Hunters!! The Hunting World is Suffering....
Ill do my best not to drop and warp my barrel
Well, ol Chuckie is right about one point. You pattern a shotgun.
I really hate to hear someone talking about "sight in" a shotgun. That's not correct.