So to begin with, the Matador isn't the only shotgun that has too much range. All high impact shotguns have too much range. The maximum range of these shot guns needs to be reduced and the base range also needs to be reduced. Not only this but low impact shotguns need the same but with range increases. This would help to balance shotguns across the board for crucible. Rangefinder should give lower impact shotguns more range than that of high impact shotguns. Another factor into the Matador's usage is map design and how quickly guardians can cover this distance. This is also why jugg shield is very good, we can quickly close the gap between each other.