It is the best impact+range combo for legendary shotguns, that don't shoot a slug. But the best over-all shotgun, is that green shotgun, Hand in Hand, that you can buy from Failsafe. It has the range+impact of Good Bone Structure, but it doesn't shoot a slug, so you don't have to aim for a crit. The only thing that sucks, is it can only go up to 200 power level. I think they did that on purpose. So people won't try to use it in trials.