Range finder or shot package, range finder works better on higher impact shotguns as you can kill at longer ranges and not have to land every pellet, lower impact shotguns shot package is better, aggressive ballistics gives a 10% damage increase but lowers the range, field choke gives a 5% damage increase pulse 5% range increase for barrels, the mode that increases range but lowers stability because shotguns in reality don't need stability, luck in the chamber or kneepads for the last perks.