It can't take down a level 24 yellow knight (fist of Crota) in one clip (level 34 guardian). Maybe it can in theory if you hit all head shots but with its accuracy that's not practicable. Given a blue shotgun would only take about 3-4 shots (about half a clip) that is why I don't like it. It needs (and sidearms generally) at least the buff pulse rifles got previously. It's not as underpowered as shotguns used to be, but as an exotic secondary it really ought to be dropping any non boss enemy under level 30 in one clip or less.